Home / 20,491,903.40-28,278,854.22-11,789,901.48

Finding the Fourth Proportional to 20,491,903.40, 28,278,854.22 and 11,789,901.48

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Solution

The fourth proportional to 20,491,903.40, 28,278,854.22 and 11,789,901.48 is: 16,270,079.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,491,903.40 : 28,278,854.22 = 11,789,901.48 : x
  2. Step 2: Convert to fraction form
    20,491,903.40/28,278,854.22 = 11,789,901.48/x
  3. Step 3: Cross multiply
    20,491,903.40x = 28,278,854.22 × 11,789,901.48
  4. Step 4: Simplify right side
    20,491,903.40x = 333,404,905,221,082.25
  5. Step 5: Solve for x
    x = 333,404,905,221,082.25/20,491,903.40
  6. Step 6: Final answer
    x = 16,270,079.88

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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.