Home / 20,712,069.60-31,057,045.20-8,731,269.60

Finding the Fourth Proportional to 20,712,069.60, 31,057,045.20 and 8,731,269.60

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Solution

The fourth proportional to 20,712,069.60, 31,057,045.20 and 8,731,269.60 is: 13,092,242.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712,069.60 : 31,057,045.20 = 8,731,269.60 : x
  2. Step 2: Convert to fraction form
    20,712,069.60/31,057,045.20 = 8,731,269.60/x
  3. Step 3: Cross multiply
    20,712,069.60x = 31,057,045.20 × 8,731,269.60
  4. Step 4: Simplify right side
    20,712,069.60x = 271,167,434,620,585.91
  5. Step 5: Solve for x
    x = 271,167,434,620,585.91/20,712,069.60
  6. Step 6: Final answer
    x = 13,092,242.34

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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.