Home / 21,025,458.46-31,538,440.41-8,251,978.78

Finding the Fourth Proportional to 21,025,458.46, 31,538,440.41 and 8,251,978.78

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Solution

The fourth proportional to 21,025,458.46, 31,538,440.41 and 8,251,978.78 is: 12,378,067.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025,458.46 : 31,538,440.41 = 8,251,978.78 : x
  2. Step 2: Convert to fraction form
    21,025,458.46/31,538,440.41 = 8,251,978.78/x
  3. Step 3: Cross multiply
    21,025,458.46x = 31,538,440.41 × 8,251,978.78
  4. Step 4: Simplify right side
    21,025,458.46x = 260,254,541,017,614.50
  5. Step 5: Solve for x
    x = 260,254,541,017,614.50/21,025,458.46
  6. Step 6: Final answer
    x = 12,378,067.36

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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.