Home / 18,727,254.20-28,069,886.10-7,942,719.80

Finding the Fourth Proportional to 18,727,254.20, 28,069,886.10 and 7,942,719.80

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Solution

The fourth proportional to 18,727,254.20, 28,069,886.10 and 7,942,719.80 is: 11,905,175.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727,254.20 : 28,069,886.10 = 7,942,719.80 : x
  2. Step 2: Convert to fraction form
    18,727,254.20/28,069,886.10 = 7,942,719.80/x
  3. Step 3: Cross multiply
    18,727,254.20x = 28,069,886.10 × 7,942,719.80
  4. Step 4: Simplify right side
    18,727,254.20x = 222,951,240,110,214.78
  5. Step 5: Solve for x
    x = 222,951,240,110,214.78/18,727,254.20
  6. Step 6: Final answer
    x = 11,905,175.08

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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.