Home / 20,861,621.40-31,267,548.90-8,731,061.40

Finding the Fourth Proportional to 20,861,621.40, 31,267,548.90 and 8,731,061.40

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Solution

The fourth proportional to 20,861,621.40, 31,267,548.90 and 8,731,061.40 is: 13,086,177.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,861,621.40 : 31,267,548.90 = 8,731,061.40 : x
  2. Step 2: Convert to fraction form
    20,861,621.40/31,267,548.90 = 8,731,061.40/x
  3. Step 3: Cross multiply
    20,861,621.40x = 31,267,548.90 × 8,731,061.40
  4. Step 4: Simplify right side
    20,861,621.40x = 272,998,889,273,402.47
  5. Step 5: Solve for x
    x = 272,998,889,273,402.47/20,861,621.40
  6. Step 6: Final answer
    x = 13,086,177.92

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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.