Home / 21,211,747.66-31,792,937.55-12,120,213.70

Finding the Fourth Proportional to 21,211,747.66, 31,792,937.55 and 12,120,213.70

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Solution

The fourth proportional to 21,211,747.66, 31,792,937.55 and 12,120,213.70 is: 18,166,216.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211,747.66 : 31,792,937.55 = 12,120,213.70 : x
  2. Step 2: Convert to fraction form
    21,211,747.66/31,792,937.55 = 12,120,213.70/x
  3. Step 3: Cross multiply
    21,211,747.66x = 31,792,937.55 × 12,120,213.70
  4. Step 4: Simplify right side
    21,211,747.66x = 385,337,197,256,754.44
  5. Step 5: Solve for x
    x = 385,337,197,256,754.44/21,211,747.66
  6. Step 6: Final answer
    x = 18,166,216.35

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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.