Home / 20,813,536.17-28,722,332.03-11,520,906.85

Finding the Fourth Proportional to 20,813,536.17, 28,722,332.03 and 11,520,906.85

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Solution

The fourth proportional to 20,813,536.17, 28,722,332.03 and 11,520,906.85 is: 15,898,658.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,813,536.17 : 28,722,332.03 = 11,520,906.85 : x
  2. Step 2: Convert to fraction form
    20,813,536.17/28,722,332.03 = 11,520,906.85/x
  3. Step 3: Cross multiply
    20,813,536.17x = 28,722,332.03 × 11,520,906.85
  4. Step 4: Simplify right side
    20,813,536.17x = 330,907,311,810,699.75
  5. Step 5: Solve for x
    x = 330,907,311,810,699.75/20,813,536.17
  6. Step 6: Final answer
    x = 15,898,658.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.