Home / 20,760,135.18-31,146,865.84-9,978,217.88

Finding the Fourth Proportional to 20,760,135.18, 31,146,865.84 and 9,978,217.88

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Solution

The fourth proportional to 20,760,135.18, 31,146,865.84 and 9,978,217.88 is: 14,970,529.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760,135.18 : 31,146,865.84 = 9,978,217.88 : x
  2. Step 2: Convert to fraction form
    20,760,135.18/31,146,865.84 = 9,978,217.88/x
  3. Step 3: Cross multiply
    20,760,135.18x = 31,146,865.84 × 9,978,217.88
  4. Step 4: Simplify right side
    20,760,135.18x = 310,790,213,630,649.25
  5. Step 5: Solve for x
    x = 310,790,213,630,649.25/20,760,135.18
  6. Step 6: Final answer
    x = 14,970,529.38

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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.