Home / 20,407,588.40-28,161,408.84-12,672,464.78

Finding the Fourth Proportional to 20,407,588.40, 28,161,408.84 and 12,672,464.78

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Solution

The fourth proportional to 20,407,588.40, 28,161,408.84 and 12,672,464.78 is: 17,487,341.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,588.40 : 28,161,408.84 = 12,672,464.78 : x
  2. Step 2: Convert to fraction form
    20,407,588.40/28,161,408.84 = 12,672,464.78/x
  3. Step 3: Cross multiply
    20,407,588.40x = 28,161,408.84 × 12,672,464.78
  4. Step 4: Simplify right side
    20,407,588.40x = 356,874,461,680,080.62
  5. Step 5: Solve for x
    x = 356,874,461,680,080.62/20,407,588.40
  6. Step 6: Final answer
    x = 17,487,341.21

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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.