Home / 11,339.78-15,648.17-6,303.69

Finding the Fourth Proportional to 11,339.78, 15,648.17 and 6,303.69

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Solution

The fourth proportional to 11,339.78, 15,648.17 and 6,303.69 is: 8,698.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,339.78 : 15,648.17 = 6,303.69 : x
  2. Step 2: Convert to fraction form
    11,339.78/15,648.17 = 6,303.69/x
  3. Step 3: Cross multiply
    11,339.78x = 15,648.17 × 6,303.69
  4. Step 4: Simplify right side
    11,339.78x = 98,641,181.23
  5. Step 5: Solve for x
    x = 98,641,181.23/11,339.78
  6. Step 6: Final answer
    x = 8,698.69

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Find fourth proportional to 5,669.89, 7,824.08 and 3,151.85
Half scale
Find fourth proportional to 22,679.55, 31,296.33 and 12,607.38
Double scale
Find fourth proportional to 11,340.78, 15,649.54 and 6,304.69
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.