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Finding the Fourth Proportional to 18,854.43, 28,302.43 and 15,929.04

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Solution

The fourth proportional to 18,854.43, 28,302.43 and 15,929.04 is: 23,911.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854.43 : 28,302.43 = 15,929.04 : x
  2. Step 2: Convert to fraction form
    18,854.43/28,302.43 = 15,929.04/x
  3. Step 3: Cross multiply
    18,854.43x = 28,302.43 × 15,929.04
  4. Step 4: Simplify right side
    18,854.43x = 450,830,539.57
  5. Step 5: Solve for x
    x = 450,830,539.57/18,854.43
  6. Step 6: Final answer
    x = 23,911.12

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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.