Home / 12,170,251.80-18,219,948.30-11,815,957.80

Finding the Fourth Proportional to 12,170,251.80, 18,219,948.30 and 11,815,957.80

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Solution

The fourth proportional to 12,170,251.80, 18,219,948.30 and 11,815,957.80 is: 17,689,538.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170,251.80 : 18,219,948.30 = 11,815,957.80 : x
  2. Step 2: Convert to fraction form
    12,170,251.80/18,219,948.30 = 11,815,957.80/x
  3. Step 3: Cross multiply
    12,170,251.80x = 18,219,948.30 × 11,815,957.80
  4. Step 4: Simplify right side
    12,170,251.80x = 215,286,140,230,981.75
  5. Step 5: Solve for x
    x = 215,286,140,230,981.75/12,170,251.80
  6. Step 6: Final answer
    x = 17,689,538.70

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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.