Home / 20,718,749.31-31,080,960.18-7,068,230.70

Finding the Fourth Proportional to 20,718,749.31, 31,080,960.18 and 7,068,230.70

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Solution

The fourth proportional to 20,718,749.31, 31,080,960.18 and 7,068,230.70 is: 10,603,313.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718,749.31 : 31,080,960.18 = 7,068,230.70 : x
  2. Step 2: Convert to fraction form
    20,718,749.31/31,080,960.18 = 7,068,230.70/x
  3. Step 3: Cross multiply
    20,718,749.31x = 31,080,960.18 × 7,068,230.70
  4. Step 4: Simplify right side
    20,718,749.31x = 219,687,396,929,753.53
  5. Step 5: Solve for x
    x = 219,687,396,929,753.53/20,718,749.31
  6. Step 6: Final answer
    x = 10,603,313.63

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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.