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Finding the Fourth Proportional to 18,925.62, 28,405.92 and 9,572.22

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Solution

The fourth proportional to 18,925.62, 28,405.92 and 9,572.22 is: 14,367.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,925.62 : 28,405.92 = 9,572.22 : x
  2. Step 2: Convert to fraction form
    18,925.62/28,405.92 = 9,572.22/x
  3. Step 3: Cross multiply
    18,925.62x = 28,405.92 × 9,572.22
  4. Step 4: Simplify right side
    18,925.62x = 271,907,715.54
  5. Step 5: Solve for x
    x = 271,907,715.54/18,925.62
  6. Step 6: Final answer
    x = 14,367.18

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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.