Home / 20,982,696.60-31,474,044.90-12,458,645.40

Finding the Fourth Proportional to 20,982,696.60, 31,474,044.90 and 12,458,645.40

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Solution

The fourth proportional to 20,982,696.60, 31,474,044.90 and 12,458,645.40 is: 18,687,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982,696.60 : 31,474,044.90 = 12,458,645.40 : x
  2. Step 2: Convert to fraction form
    20,982,696.60/31,474,044.90 = 12,458,645.40/x
  3. Step 3: Cross multiply
    20,982,696.60x = 31,474,044.90 × 12,458,645.40
  4. Step 4: Simplify right side
    20,982,696.60x = 392,123,964,712,778.44
  5. Step 5: Solve for x
    x = 392,123,964,712,778.44/20,982,696.60
  6. Step 6: Final answer
    x = 18,687,968.10

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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.