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Finding the Fourth Proportional to 18,881.68, 28,327.32 and 17,695.76

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Solution

The fourth proportional to 18,881.68, 28,327.32 and 17,695.76 is: 26,548.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,881.68 : 28,327.32 = 17,695.76 : x
  2. Step 2: Convert to fraction form
    18,881.68/28,327.32 = 17,695.76/x
  3. Step 3: Cross multiply
    18,881.68x = 28,327.32 × 17,695.76
  4. Step 4: Simplify right side
    18,881.68x = 501,273,456.16
  5. Step 5: Solve for x
    x = 501,273,456.16/18,881.68
  6. Step 6: Final answer
    x = 26,548.14

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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.