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Finding the Fourth Proportional to 15,136.01, 20,869.85 and 10,358.28

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Solution

The fourth proportional to 15,136.01, 20,869.85 and 10,358.28 is: 14,282.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,136.01 : 20,869.85 = 10,358.28 : x
  2. Step 2: Convert to fraction form
    15,136.01/20,869.85 = 10,358.28/x
  3. Step 3: Cross multiply
    15,136.01x = 20,869.85 × 10,358.28
  4. Step 4: Simplify right side
    15,136.01x = 216,175,775.75
  5. Step 5: Solve for x
    x = 216,175,775.75/15,136.01
  6. Step 6: Final answer
    x = 14,282.21

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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.