Home / 12,965,713.20-19,448,569.80-12,221,695.80

Finding the Fourth Proportional to 12,965,713.20, 19,448,569.80 and 12,221,695.80

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Solution

The fourth proportional to 12,965,713.20, 19,448,569.80 and 12,221,695.80 is: 18,332,543.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,965,713.20 : 19,448,569.80 = 12,221,695.80 : x
  2. Step 2: Convert to fraction form
    12,965,713.20/19,448,569.80 = 12,221,695.80/x
  3. Step 3: Cross multiply
    12,965,713.20x = 19,448,569.80 × 12,221,695.80
  4. Step 4: Simplify right side
    12,965,713.20x = 237,694,503,840,666.88
  5. Step 5: Solve for x
    x = 237,694,503,840,666.88/12,965,713.20
  6. Step 6: Final answer
    x = 18,332,543.70

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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.