Home / 11,149.31-15,386.34-6,303.65

Finding the Fourth Proportional to 11,149.31, 15,386.34 and 6,303.65

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Solution

The fourth proportional to 11,149.31, 15,386.34 and 6,303.65 is: 8,699.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,149.31 : 15,386.34 = 6,303.65 : x
  2. Step 2: Convert to fraction form
    11,149.31/15,386.34 = 6,303.65/x
  3. Step 3: Cross multiply
    11,149.31x = 15,386.34 × 6,303.65
  4. Step 4: Simplify right side
    11,149.31x = 96,990,102.14
  5. Step 5: Solve for x
    x = 96,990,102.14/11,149.31
  6. Step 6: Final answer
    x = 8,699.20

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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.