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Finding the Fourth Proportional to 10,404.88, 15,590.88 and 8,447.52

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Solution

The fourth proportional to 10,404.88, 15,590.88 and 8,447.52 is: 12,657.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,404.88 : 15,590.88 = 8,447.52 : x
  2. Step 2: Convert to fraction form
    10,404.88/15,590.88 = 8,447.52/x
  3. Step 3: Cross multiply
    10,404.88x = 15,590.88 × 8,447.52
  4. Step 4: Simplify right side
    10,404.88x = 131,704,270.62
  5. Step 5: Solve for x
    x = 131,704,270.62/10,404.88
  6. Step 6: Final answer
    x = 12,657.93

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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.