Home / 13,715,728.85-20,578,166.74-9,122,821.86

Finding the Fourth Proportional to 13,715,728.85, 20,578,166.74 and 9,122,821.86

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Solution

The fourth proportional to 13,715,728.85, 20,578,166.74 and 9,122,821.86 is: 13,687,274.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715,728.85 : 20,578,166.74 = 9,122,821.86 : x
  2. Step 2: Convert to fraction form
    13,715,728.85/20,578,166.74 = 9,122,821.86/x
  3. Step 3: Cross multiply
    13,715,728.85x = 20,578,166.74 × 9,122,821.86
  4. Step 4: Simplify right side
    13,715,728.85x = 187,730,949,374,396.91
  5. Step 5: Solve for x
    x = 187,730,949,374,396.91/13,715,728.85
  6. Step 6: Final answer
    x = 13,687,274.77

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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.