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Finding the Fourth Proportional to 18,746.73, 28,125.54 and 8,872.43

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Solution

The fourth proportional to 18,746.73, 28,125.54 and 8,872.43 is: 13,311.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,746.73 : 28,125.54 = 8,872.43 : x
  2. Step 2: Convert to fraction form
    18,746.73/28,125.54 = 8,872.43/x
  3. Step 3: Cross multiply
    18,746.73x = 28,125.54 × 8,872.43
  4. Step 4: Simplify right side
    18,746.73x = 249,541,744.23
  5. Step 5: Solve for x
    x = 249,541,744.23/18,746.73
  6. Step 6: Final answer
    x = 13,311.21

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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.