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Finding the Fourth Proportional to 18,952.38, 28,428.57 and 5,101.38

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Solution

The fourth proportional to 18,952.38, 28,428.57 and 5,101.38 is: 7,652.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,952.38 : 28,428.57 = 5,101.38 : x
  2. Step 2: Convert to fraction form
    18,952.38/28,428.57 = 5,101.38/x
  3. Step 3: Cross multiply
    18,952.38x = 28,428.57 × 5,101.38
  4. Step 4: Simplify right side
    18,952.38x = 145,024,938.43
  5. Step 5: Solve for x
    x = 145,024,938.43/18,952.38
  6. Step 6: Final answer
    x = 7,652.07

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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.