Home / 20,775,552.52-31,153,520.52-12,142,129.72

Finding the Fourth Proportional to 20,775,552.52, 31,153,520.52 and 12,142,129.72

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Solution

The fourth proportional to 20,775,552.52, 31,153,520.52 and 12,142,129.72 is: 18,207,462.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775,552.52 : 31,153,520.52 = 12,142,129.72 : x
  2. Step 2: Convert to fraction form
    20,775,552.52/31,153,520.52 = 12,142,129.72/x
  3. Step 3: Cross multiply
    20,775,552.52x = 31,153,520.52 × 12,142,129.72
  4. Step 4: Simplify right side
    20,775,552.52x = 378,270,087,388,521.88
  5. Step 5: Solve for x
    x = 378,270,087,388,521.88/20,775,552.52
  6. Step 6: Final answer
    x = 18,207,462.21

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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.