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Finding the Fourth Proportional to 18,445.76, 27,668.64 and 15,801.92

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Solution

The fourth proportional to 18,445.76, 27,668.64 and 15,801.92 is: 23,702.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,445.76 : 27,668.64 = 15,801.92 : x
  2. Step 2: Convert to fraction form
    18,445.76/27,668.64 = 15,801.92/x
  3. Step 3: Cross multiply
    18,445.76x = 27,668.64 × 15,801.92
  4. Step 4: Simplify right side
    18,445.76x = 437,217,635.79
  5. Step 5: Solve for x
    x = 437,217,635.79/18,445.76
  6. Step 6: Final answer
    x = 23,702.88

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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.