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Finding the Fourth Proportional to 22,718.80, 34,013.40 and 20,126.80

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Solution

The fourth proportional to 22,718.80, 34,013.40 and 20,126.80 is: 30,132.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,718.80 : 34,013.40 = 20,126.80 : x
  2. Step 2: Convert to fraction form
    22,718.80/34,013.40 = 20,126.80/x
  3. Step 3: Cross multiply
    22,718.80x = 34,013.40 × 20,126.80
  4. Step 4: Simplify right side
    22,718.80x = 684,580,899.12
  5. Step 5: Solve for x
    x = 684,580,899.12/22,718.80
  6. Step 6: Final answer
    x = 30,132.79

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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.