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Finding the Fourth Proportional to 17,648.40, 26,472.61 and 11,079.20

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Solution

The fourth proportional to 17,648.40, 26,472.61 and 11,079.20 is: 16,618.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,648.40 : 26,472.61 = 11,079.20 : x
  2. Step 2: Convert to fraction form
    17,648.40/26,472.61 = 11,079.20/x
  3. Step 3: Cross multiply
    17,648.40x = 26,472.61 × 11,079.20
  4. Step 4: Simplify right side
    17,648.40x = 293,295,451.90
  5. Step 5: Solve for x
    x = 293,295,451.90/17,648.40
  6. Step 6: Final answer
    x = 16,618.81

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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.