Home / 20,490,631.70-30,747,757.35-7,720,301.30

Finding the Fourth Proportional to 20,490,631.70, 30,747,757.35 and 7,720,301.30

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Solution

The fourth proportional to 20,490,631.70, 30,747,757.35 and 7,720,301.30 is: 11,584,901.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490,631.70 : 30,747,757.35 = 7,720,301.30 : x
  2. Step 2: Convert to fraction form
    20,490,631.70/30,747,757.35 = 7,720,301.30/x
  3. Step 3: Cross multiply
    20,490,631.70x = 30,747,757.35 × 7,720,301.30
  4. Step 4: Simplify right side
    20,490,631.70x = 237,381,951,041,289.56
  5. Step 5: Solve for x
    x = 237,381,951,041,289.56/20,490,631.70
  6. Step 6: Final answer
    x = 11,584,901.55

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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.