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Finding the Fourth Proportional to 26,008.40, 38,998.20 and 8,469.20

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Solution

The fourth proportional to 26,008.40, 38,998.20 and 8,469.20 is: 12,699.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,008.40 : 38,998.20 = 8,469.20 : x
  2. Step 2: Convert to fraction form
    26,008.40/38,998.20 = 8,469.20/x
  3. Step 3: Cross multiply
    26,008.40x = 38,998.20 × 8,469.20
  4. Step 4: Simplify right side
    26,008.40x = 330,283,555.44
  5. Step 5: Solve for x
    x = 330,283,555.44/26,008.40
  6. Step 6: Final answer
    x = 12,699.11

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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.