Home / 13,890,401.60-20,802,424.80-8,515,630.40

Finding the Fourth Proportional to 13,890,401.60, 20,802,424.80 and 8,515,630.40

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Solution

The fourth proportional to 13,890,401.60, 20,802,424.80 and 8,515,630.40 is: 12,753,105.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890,401.60 : 20,802,424.80 = 8,515,630.40 : x
  2. Step 2: Convert to fraction form
    13,890,401.60/20,802,424.80 = 8,515,630.40/x
  3. Step 3: Cross multiply
    13,890,401.60x = 20,802,424.80 × 8,515,630.40
  4. Step 4: Simplify right side
    13,890,401.60x = 177,145,761,020,593.94
  5. Step 5: Solve for x
    x = 177,145,761,020,593.94/13,890,401.60
  6. Step 6: Final answer
    x = 12,753,105.79

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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.