Home / 39,142.20-58,710.08-15,448.78

Finding the Fourth Proportional to 39,142.20, 58,710.08 and 15,448.78

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Solution

The fourth proportional to 39,142.20, 58,710.08 and 15,448.78 is: 23,171.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,142.20 : 58,710.08 = 15,448.78 : x
  2. Step 2: Convert to fraction form
    39,142.20/58,710.08 = 15,448.78/x
  3. Step 3: Cross multiply
    39,142.20x = 58,710.08 × 15,448.78
  4. Step 4: Simplify right side
    39,142.20x = 906,999,109.70
  5. Step 5: Solve for x
    x = 906,999,109.70/39,142.20
  6. Step 6: Final answer
    x = 23,171.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.