Home / 12,965,712.70-19,448,569.05-12,221,695.30

Finding the Fourth Proportional to 12,965,712.70, 19,448,569.05 and 12,221,695.30

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Solution

The fourth proportional to 12,965,712.70, 19,448,569.05 and 12,221,695.30 is: 18,332,542.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,965,712.70 : 19,448,569.05 = 12,221,695.30 : x
  2. Step 2: Convert to fraction form
    12,965,712.70/19,448,569.05 = 12,221,695.30/x
  3. Step 3: Cross multiply
    12,965,712.70x = 19,448,569.05 × 12,221,695.30
  4. Step 4: Simplify right side
    12,965,712.70x = 237,694,484,950,110.50
  5. Step 5: Solve for x
    x = 237,694,484,950,110.50/12,965,712.70
  6. Step 6: Final answer
    x = 18,332,542.95

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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.