Home / 20,564,469.15-28,378,970.12-11,397,703.71

Finding the Fourth Proportional to 20,564,469.15, 28,378,970.12 and 11,397,703.71

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Solution

The fourth proportional to 20,564,469.15, 28,378,970.12 and 11,397,703.71 is: 15,728,832.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,564,469.15 : 28,378,970.12 = 11,397,703.71 : x
  2. Step 2: Convert to fraction form
    20,564,469.15/28,378,970.12 = 11,397,703.71/x
  3. Step 3: Cross multiply
    20,564,469.15x = 28,378,970.12 × 11,397,703.71
  4. Step 4: Simplify right side
    20,564,469.15x = 323,455,092,965,714.62
  5. Step 5: Solve for x
    x = 323,455,092,965,714.62/20,564,469.15
  6. Step 6: Final answer
    x = 15,728,832.61

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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.