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Finding the Fourth Proportional to 15,776.91, 23,658.48 and 8,379.59

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Solution

The fourth proportional to 15,776.91, 23,658.48 and 8,379.59 is: 12,565.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,776.91 : 23,658.48 = 8,379.59 : x
  2. Step 2: Convert to fraction form
    15,776.91/23,658.48 = 8,379.59/x
  3. Step 3: Cross multiply
    15,776.91x = 23,658.48 × 8,379.59
  4. Step 4: Simplify right side
    15,776.91x = 198,248,244.13
  5. Step 5: Solve for x
    x = 198,248,244.13/15,776.91
  6. Step 6: Final answer
    x = 12,565.72

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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.