Home / 13,612,136.70-20,418,205.05-12,124,101.90

Finding the Fourth Proportional to 13,612,136.70, 20,418,205.05 and 12,124,101.90

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Solution

The fourth proportional to 13,612,136.70, 20,418,205.05 and 12,124,101.90 is: 18,186,152.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612,136.70 : 20,418,205.05 = 12,124,101.90 : x
  2. Step 2: Convert to fraction form
    13,612,136.70/20,418,205.05 = 12,124,101.90/x
  3. Step 3: Cross multiply
    13,612,136.70x = 20,418,205.05 × 12,124,101.90
  4. Step 4: Simplify right side
    13,612,136.70x = 247,552,398,641,294.62
  5. Step 5: Solve for x
    x = 247,552,398,641,294.62/13,612,136.70
  6. Step 6: Final answer
    x = 18,186,152.85

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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.