Home / 20,854,076.10-31,281,114.15-12,344,021.70

Finding the Fourth Proportional to 20,854,076.10, 31,281,114.15 and 12,344,021.70

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Solution

The fourth proportional to 20,854,076.10, 31,281,114.15 and 12,344,021.70 is: 18,516,032.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854,076.10 : 31,281,114.15 = 12,344,021.70 : x
  2. Step 2: Convert to fraction form
    20,854,076.10/31,281,114.15 = 12,344,021.70/x
  3. Step 3: Cross multiply
    20,854,076.10x = 31,281,114.15 × 12,344,021.70
  4. Step 4: Simplify right side
    20,854,076.10x = 386,134,751,867,777
  5. Step 5: Solve for x
    x = 386,134,751,867,777/20,854,076.10
  6. Step 6: Final answer
    x = 18,516,032.55

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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.