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Finding the Fourth Proportional to 18,715.13, 28,073.91 and 6,234.65

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Solution

The fourth proportional to 18,715.13, 28,073.91 and 6,234.65 is: 9,352.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715.13 : 28,073.91 = 6,234.65 : x
  2. Step 2: Convert to fraction form
    18,715.13/28,073.91 = 6,234.65/x
  3. Step 3: Cross multiply
    18,715.13x = 28,073.91 × 6,234.65
  4. Step 4: Simplify right side
    18,715.13x = 175,031,002.98
  5. Step 5: Solve for x
    x = 175,031,002.98/18,715.13
  6. Step 6: Final answer
    x = 9,352.38

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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.