Home / 39,487.20-54,479.64-28,158.60

Finding the Fourth Proportional to 39,487.20, 54,479.64 and 28,158.60

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Solution

The fourth proportional to 39,487.20, 54,479.64 and 28,158.60 is: 38,849.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,487.20 : 54,479.64 = 28,158.60 : x
  2. Step 2: Convert to fraction form
    39,487.20/54,479.64 = 28,158.60/x
  3. Step 3: Cross multiply
    39,487.20x = 54,479.64 × 28,158.60
  4. Step 4: Simplify right side
    39,487.20x = 1,534,070,390.90
  5. Step 5: Solve for x
    x = 1,534,070,390.90/39,487.20
  6. Step 6: Final answer
    x = 38,849.81

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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.