Home / 12,451,046.70-18,676,570.05-7,643,145.90

Finding the Fourth Proportional to 12,451,046.70, 18,676,570.05 and 7,643,145.90

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Solution

The fourth proportional to 12,451,046.70, 18,676,570.05 and 7,643,145.90 is: 11,464,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,451,046.70 : 18,676,570.05 = 7,643,145.90 : x
  2. Step 2: Convert to fraction form
    12,451,046.70/18,676,570.05 = 7,643,145.90/x
  3. Step 3: Cross multiply
    12,451,046.70x = 18,676,570.05 × 7,643,145.90
  4. Step 4: Simplify right side
    12,451,046.70x = 142,747,749,803,720.31
  5. Step 5: Solve for x
    x = 142,747,749,803,720.31/12,451,046.70
  6. Step 6: Final answer
    x = 11,464,718.85

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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.