Home / 39,487.68-54,468-25,358.40

Finding the Fourth Proportional to 39,487.68, 54,468 and 25,358.40

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Solution

The fourth proportional to 39,487.68, 54,468 and 25,358.40 is: 34,978.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,487.68 : 54,468 = 25,358.40 : x
  2. Step 2: Convert to fraction form
    39,487.68/54,468 = 25,358.40/x
  3. Step 3: Cross multiply
    39,487.68x = 54,468 × 25,358.40
  4. Step 4: Simplify right side
    39,487.68x = 1,381,221,331.20
  5. Step 5: Solve for x
    x = 1,381,221,331.20/39,487.68
  6. Step 6: Final answer
    x = 34,978.54

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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.