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Finding the Fourth Proportional to 22,779.70, 34,154.70 and 20,446.90

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Solution

The fourth proportional to 22,779.70, 34,154.70 and 20,446.90 is: 30,657.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,779.70 : 34,154.70 = 20,446.90 : x
  2. Step 2: Convert to fraction form
    22,779.70/34,154.70 = 20,446.90/x
  3. Step 3: Cross multiply
    22,779.70x = 34,154.70 × 20,446.90
  4. Step 4: Simplify right side
    22,779.70x = 698,357,735.43
  5. Step 5: Solve for x
    x = 698,357,735.43/22,779.70
  6. Step 6: Final answer
    x = 30,657.02

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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.