Home / 13,397.92-18,487.86-7,429.07

Finding the Fourth Proportional to 13,397.92, 18,487.86 and 7,429.07

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Solution

The fourth proportional to 13,397.92, 18,487.86 and 7,429.07 is: 10,251.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.92 : 18,487.86 = 7,429.07 : x
  2. Step 2: Convert to fraction form
    13,397.92/18,487.86 = 7,429.07/x
  3. Step 3: Cross multiply
    13,397.92x = 18,487.86 × 7,429.07
  4. Step 4: Simplify right side
    13,397.92x = 137,347,606.09
  5. Step 5: Solve for x
    x = 137,347,606.09/13,397.92
  6. Step 6: Final answer
    x = 10,251.41

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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.