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Finding the Fourth Proportional to 28,136.01, 42,191.71 and 13,349.15

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Solution

The fourth proportional to 28,136.01, 42,191.71 and 13,349.15 is: 20,017.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.01 : 42,191.71 = 13,349.15 : x
  2. Step 2: Convert to fraction form
    28,136.01/42,191.71 = 13,349.15/x
  3. Step 3: Cross multiply
    28,136.01x = 42,191.71 × 13,349.15
  4. Step 4: Simplify right side
    28,136.01x = 563,223,187.84
  5. Step 5: Solve for x
    x = 563,223,187.84/28,136.01
  6. Step 6: Final answer
    x = 20,017.88

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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.