Home / 20,786,073.14-31,163,215.61-12,586,930.90

Finding the Fourth Proportional to 20,786,073.14, 31,163,215.61 and 12,586,930.90

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Solution

The fourth proportional to 20,786,073.14, 31,163,215.61 and 12,586,930.90 is: 18,870,771.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786,073.14 : 31,163,215.61 = 12,586,930.90 : x
  2. Step 2: Convert to fraction form
    20,786,073.14/31,163,215.61 = 12,586,930.90/x
  3. Step 3: Cross multiply
    20,786,073.14x = 31,163,215.61 × 12,586,930.90
  4. Step 4: Simplify right side
    20,786,073.14x = 392,249,241,286,120.62
  5. Step 5: Solve for x
    x = 392,249,241,286,120.62/20,786,073.14
  6. Step 6: Final answer
    x = 18,870,771.73

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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.