Home / 20,412,522.90-30,583,354.95-13,220,354.70

Finding the Fourth Proportional to 20,412,522.90, 30,583,354.95 and 13,220,354.70

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Solution

The fourth proportional to 20,412,522.90, 30,583,354.95 and 13,220,354.70 is: 19,807,585.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412,522.90 : 30,583,354.95 = 13,220,354.70 : x
  2. Step 2: Convert to fraction form
    20,412,522.90/30,583,354.95 = 13,220,354.70/x
  3. Step 3: Cross multiply
    20,412,522.90x = 30,583,354.95 × 13,220,354.70
  4. Step 4: Simplify right side
    20,412,522.90x = 404,322,800,355,000.75
  5. Step 5: Solve for x
    x = 404,322,800,355,000.75/20,412,522.90
  6. Step 6: Final answer
    x = 19,807,585.88

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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.