Home / 20,961,456.47-31,445,049.76-7,312,556.91

Finding the Fourth Proportional to 20,961,456.47, 31,445,049.76 and 7,312,556.91

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Solution

The fourth proportional to 20,961,456.47, 31,445,049.76 and 7,312,556.91 is: 10,969,834.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961,456.47 : 31,445,049.76 = 7,312,556.91 : x
  2. Step 2: Convert to fraction form
    20,961,456.47/31,445,049.76 = 7,312,556.91/x
  3. Step 3: Cross multiply
    20,961,456.47x = 31,445,049.76 × 7,312,556.91
  4. Step 4: Simplify right side
    20,961,456.47x = 229,943,715,956,505.09
  5. Step 5: Solve for x
    x = 229,943,715,956,505.09/20,961,456.47
  6. Step 6: Final answer
    x = 10,969,834.86

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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.