Home / 20,786,067.39-31,163,206.98-12,586,925.15

Finding the Fourth Proportional to 20,786,067.39, 31,163,206.98 and 12,586,925.15

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Solution

The fourth proportional to 20,786,067.39, 31,163,206.98 and 12,586,925.15 is: 18,870,763.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786,067.39 : 31,163,206.98 = 12,586,925.15 : x
  2. Step 2: Convert to fraction form
    20,786,067.39/31,163,206.98 = 12,586,925.15/x
  3. Step 3: Cross multiply
    20,786,067.39x = 31,163,206.98 × 12,586,925.15
  4. Step 4: Simplify right side
    20,786,067.39x = 392,248,953,535,401.50
  5. Step 5: Solve for x
    x = 392,248,953,535,401.50/20,786,067.39
  6. Step 6: Final answer
    x = 18,870,763.10

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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.