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Finding the Fourth Proportional to 22,961.80, 34,442.70 and 20,847.70

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Solution

The fourth proportional to 22,961.80, 34,442.70 and 20,847.70 is: 31,271.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,961.80 : 34,442.70 = 20,847.70 : x
  2. Step 2: Convert to fraction form
    22,961.80/34,442.70 = 20,847.70/x
  3. Step 3: Cross multiply
    22,961.80x = 34,442.70 × 20,847.70
  4. Step 4: Simplify right side
    22,961.80x = 718,051,076.79
  5. Step 5: Solve for x
    x = 718,051,076.79/22,961.80
  6. Step 6: Final answer
    x = 31,271.55

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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.