Home / 39,136.80-58,737.60-18,109.20

Finding the Fourth Proportional to 39,136.80, 58,737.60 and 18,109.20

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Solution

The fourth proportional to 39,136.80, 58,737.60 and 18,109.20 is: 27,178.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,136.80 : 58,737.60 = 18,109.20 : x
  2. Step 2: Convert to fraction form
    39,136.80/58,737.60 = 18,109.20/x
  3. Step 3: Cross multiply
    39,136.80x = 58,737.60 × 18,109.20
  4. Step 4: Simplify right side
    39,136.80x = 1,063,690,945.92
  5. Step 5: Solve for x
    x = 1,063,690,945.92/39,136.80
  6. Step 6: Final answer
    x = 27,178.79

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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.