Home / 20,898,008.80-31,347,013.20-18,665,956.60

Finding the Fourth Proportional to 20,898,008.80, 31,347,013.20 and 18,665,956.60

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Solution

The fourth proportional to 20,898,008.80, 31,347,013.20 and 18,665,956.60 is: 27,998,934.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898,008.80 : 31,347,013.20 = 18,665,956.60 : x
  2. Step 2: Convert to fraction form
    20,898,008.80/31,347,013.20 = 18,665,956.60/x
  3. Step 3: Cross multiply
    20,898,008.80x = 31,347,013.20 × 18,665,956.60
  4. Step 4: Simplify right side
    20,898,008.80x = 585,121,987,930,827.12
  5. Step 5: Solve for x
    x = 585,121,987,930,827.12/20,898,008.80
  6. Step 6: Final answer
    x = 27,998,934.90

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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.