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Finding the Fourth Proportional to 17,918.34, 26,877.98 and 4,770.73

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Solution

The fourth proportional to 17,918.34, 26,877.98 and 4,770.73 is: 7,156.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,918.34 : 26,877.98 = 4,770.73 : x
  2. Step 2: Convert to fraction form
    17,918.34/26,877.98 = 4,770.73/x
  3. Step 3: Cross multiply
    17,918.34x = 26,877.98 × 4,770.73
  4. Step 4: Simplify right side
    17,918.34x = 128,227,585.53
  5. Step 5: Solve for x
    x = 128,227,585.53/17,918.34
  6. Step 6: Final answer
    x = 7,156.22

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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.