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Finding the Fourth Proportional to 15,162.68, 20,924.04 and 8,447.89

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Solution

The fourth proportional to 15,162.68, 20,924.04 and 8,447.89 is: 11,657.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,162.68 : 20,924.04 = 8,447.89 : x
  2. Step 2: Convert to fraction form
    15,162.68/20,924.04 = 8,447.89/x
  3. Step 3: Cross multiply
    15,162.68x = 20,924.04 × 8,447.89
  4. Step 4: Simplify right side
    15,162.68x = 176,763,935.97
  5. Step 5: Solve for x
    x = 176,763,935.97/15,162.68
  6. Step 6: Final answer
    x = 11,657.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.