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Finding the Fourth Proportional to 18,304.96, 27,221.96 and 17,721.76

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Solution

The fourth proportional to 18,304.96, 27,221.96 and 17,721.76 is: 26,354.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,304.96 : 27,221.96 = 17,721.76 : x
  2. Step 2: Convert to fraction form
    18,304.96/27,221.96 = 17,721.76/x
  3. Step 3: Cross multiply
    18,304.96x = 27,221.96 × 17,721.76
  4. Step 4: Simplify right side
    18,304.96x = 482,421,041.85
  5. Step 5: Solve for x
    x = 482,421,041.85/18,304.96
  6. Step 6: Final answer
    x = 26,354.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.