Home / 39,136.16-58,660.08-19,428.80

Finding the Fourth Proportional to 39,136.16, 58,660.08 and 19,428.80

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Solution

The fourth proportional to 39,136.16, 58,660.08 and 19,428.80 is: 29,121.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,136.16 : 58,660.08 = 19,428.80 : x
  2. Step 2: Convert to fraction form
    39,136.16/58,660.08 = 19,428.80/x
  3. Step 3: Cross multiply
    39,136.16x = 58,660.08 × 19,428.80
  4. Step 4: Simplify right side
    39,136.16x = 1,139,694,962.30
  5. Step 5: Solve for x
    x = 1,139,694,962.30/39,136.16
  6. Step 6: Final answer
    x = 29,121.28

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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.