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Finding the Fourth Proportional to 12,899.01, 17,801.63 and 7,234.28

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Solution

The fourth proportional to 12,899.01, 17,801.63 and 7,234.28 is: 9,983.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,899.01 : 17,801.63 = 7,234.28 : x
  2. Step 2: Convert to fraction form
    12,899.01/17,801.63 = 7,234.28/x
  3. Step 3: Cross multiply
    12,899.01x = 17,801.63 × 7,234.28
  4. Step 4: Simplify right side
    12,899.01x = 128,781,850.70
  5. Step 5: Solve for x
    x = 128,781,850.70/12,899.01
  6. Step 6: Final answer
    x = 9,983.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.