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Finding the Fourth Proportional to 15,221.58, 22,815.57 and 9,954.42

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Solution

The fourth proportional to 15,221.58, 22,815.57 and 9,954.42 is: 14,920.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,221.58 : 22,815.57 = 9,954.42 : x
  2. Step 2: Convert to fraction form
    15,221.58/22,815.57 = 9,954.42/x
  3. Step 3: Cross multiply
    15,221.58x = 22,815.57 × 9,954.42
  4. Step 4: Simplify right side
    15,221.58x = 227,115,766.32
  5. Step 5: Solve for x
    x = 227,115,766.32/15,221.58
  6. Step 6: Final answer
    x = 14,920.64

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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.