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Finding the Fourth Proportional to 19,019.52, 28,505.52 and 9,156.18

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Solution

The fourth proportional to 19,019.52, 28,505.52 and 9,156.18 is: 13,722.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,019.52 : 28,505.52 = 9,156.18 : x
  2. Step 2: Convert to fraction form
    19,019.52/28,505.52 = 9,156.18/x
  3. Step 3: Cross multiply
    19,019.52x = 28,505.52 × 9,156.18
  4. Step 4: Simplify right side
    19,019.52x = 261,001,672.11
  5. Step 5: Solve for x
    x = 261,001,672.11/19,019.52
  6. Step 6: Final answer
    x = 13,722.83

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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.