Home / 13,331.50-18,397.47-7,742.86

Finding the Fourth Proportional to 13,331.50, 18,397.47 and 7,742.86

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Solution

The fourth proportional to 13,331.50, 18,397.47 and 7,742.86 is: 10,685.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.50 : 18,397.47 = 7,742.86 : x
  2. Step 2: Convert to fraction form
    13,331.50/18,397.47 = 7,742.86/x
  3. Step 3: Cross multiply
    13,331.50x = 18,397.47 × 7,742.86
  4. Step 4: Simplify right side
    13,331.50x = 142,449,034.56
  5. Step 5: Solve for x
    x = 142,449,034.56/13,331.50
  6. Step 6: Final answer
    x = 10,685.15

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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.