Home / 12,983,976-17,918,414.46-7,182,657.72

Finding the Fourth Proportional to 12,983,976, 17,918,414.46 and 7,182,657.72

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Solution

The fourth proportional to 12,983,976, 17,918,414.46 and 7,182,657.72 is: 9,912,359.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,983,976 : 17,918,414.46 = 7,182,657.72 : x
  2. Step 2: Convert to fraction form
    12,983,976/17,918,414.46 = 7,182,657.72/x
  3. Step 3: Cross multiply
    12,983,976x = 17,918,414.46 × 7,182,657.72
  4. Step 4: Simplify right side
    12,983,976x = 128,701,837,951,278.64
  5. Step 5: Solve for x
    x = 128,701,837,951,278.64/12,983,976
  6. Step 6: Final answer
    x = 9,912,359.51

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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.