Home / 11,120.67-15,348.42-6,407.69

Finding the Fourth Proportional to 11,120.67, 15,348.42 and 6,407.69

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Solution

The fourth proportional to 11,120.67, 15,348.42 and 6,407.69 is: 8,843.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.67 : 15,348.42 = 6,407.69 : x
  2. Step 2: Convert to fraction form
    11,120.67/15,348.42 = 6,407.69/x
  3. Step 3: Cross multiply
    11,120.67x = 15,348.42 × 6,407.69
  4. Step 4: Simplify right side
    11,120.67x = 98,347,840.61
  5. Step 5: Solve for x
    x = 98,347,840.61/11,120.67
  6. Step 6: Final answer
    x = 8,843.70

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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.