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Finding the Fourth Proportional to 19,918.56, 29,877.88 and 8,232.09

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Solution

The fourth proportional to 19,918.56, 29,877.88 and 8,232.09 is: 12,348.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.56 : 29,877.88 = 8,232.09 : x
  2. Step 2: Convert to fraction form
    19,918.56/29,877.88 = 8,232.09/x
  3. Step 3: Cross multiply
    19,918.56x = 29,877.88 × 8,232.09
  4. Step 4: Simplify right side
    19,918.56x = 245,957,397.17
  5. Step 5: Solve for x
    x = 245,957,397.17/19,918.56
  6. Step 6: Final answer
    x = 12,348.15

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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.