Home / 20,407,587.90-28,161,408.15-12,672,464.28

Finding the Fourth Proportional to 20,407,587.90, 28,161,408.15 and 12,672,464.28

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Solution

The fourth proportional to 20,407,587.90, 28,161,408.15 and 12,672,464.28 is: 17,487,340.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,587.90 : 28,161,408.15 = 12,672,464.28 : x
  2. Step 2: Convert to fraction form
    20,407,587.90/28,161,408.15 = 12,672,464.28/x
  3. Step 3: Cross multiply
    20,407,587.90x = 28,161,408.15 × 12,672,464.28
  4. Step 4: Simplify right side
    20,407,587.90x = 356,874,438,855,375.88
  5. Step 5: Solve for x
    x = 356,874,438,855,375.88/20,407,587.90
  6. Step 6: Final answer
    x = 17,487,340.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.