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Finding the Fourth Proportional to 22,031.57, 30,404.09 and 13,079.11

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Solution

The fourth proportional to 22,031.57, 30,404.09 and 13,079.11 is: 18,049.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,031.57 : 30,404.09 = 13,079.11 : x
  2. Step 2: Convert to fraction form
    22,031.57/30,404.09 = 13,079.11/x
  3. Step 3: Cross multiply
    22,031.57x = 30,404.09 × 13,079.11
  4. Step 4: Simplify right side
    22,031.57x = 397,658,296.15
  5. Step 5: Solve for x
    x = 397,658,296.15/22,031.57
  6. Step 6: Final answer
    x = 18,049.47

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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.