Home / 28,715,779.20-39,627,775.56-15,663,037.44

Finding the Fourth Proportional to 28,715,779.20, 39,627,775.56 and 15,663,037.44

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Solution

The fourth proportional to 28,715,779.20, 39,627,775.56 and 15,663,037.44 is: 21,614,991.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,715,779.20 : 39,627,775.56 = 15,663,037.44 : x
  2. Step 2: Convert to fraction form
    28,715,779.20/39,627,775.56 = 15,663,037.44/x
  3. Step 3: Cross multiply
    28,715,779.20x = 39,627,775.56 × 15,663,037.44
  4. Step 4: Simplify right side
    28,715,779.20x = 620,691,332,260,197
  5. Step 5: Solve for x
    x = 620,691,332,260,197/28,715,779.20
  6. Step 6: Final answer
    x = 21,614,991.81

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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.