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Finding the Fourth Proportional to 27,281.70, 40,922.55 and 15,423.30

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Solution

The fourth proportional to 27,281.70, 40,922.55 and 15,423.30 is: 23,134.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,281.70 : 40,922.55 = 15,423.30 : x
  2. Step 2: Convert to fraction form
    27,281.70/40,922.55 = 15,423.30/x
  3. Step 3: Cross multiply
    27,281.70x = 40,922.55 × 15,423.30
  4. Step 4: Simplify right side
    27,281.70x = 631,160,765.42
  5. Step 5: Solve for x
    x = 631,160,765.42/27,281.70
  6. Step 6: Final answer
    x = 23,134.95

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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.