Home / 39,136.90-58,685.64-19,147.87

Finding the Fourth Proportional to 39,136.90, 58,685.64 and 19,147.87

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Solution

The fourth proportional to 39,136.90, 58,685.64 and 19,147.87 is: 28,712.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,136.90 : 58,685.64 = 19,147.87 : x
  2. Step 2: Convert to fraction form
    39,136.90/58,685.64 = 19,147.87/x
  3. Step 3: Cross multiply
    39,136.90x = 58,685.64 × 19,147.87
  4. Step 4: Simplify right side
    39,136.90x = 1,123,704,895.94
  5. Step 5: Solve for x
    x = 1,123,704,895.94/39,136.90
  6. Step 6: Final answer
    x = 28,712.16

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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.