Home / 18,191,875.80-27,291,750.30-5,413,672.20

Finding the Fourth Proportional to 18,191,875.80, 27,291,750.30 and 5,413,672.20

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Solution

The fourth proportional to 18,191,875.80, 27,291,750.30 and 5,413,672.20 is: 8,121,679.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191,875.80 : 27,291,750.30 = 5,413,672.20 : x
  2. Step 2: Convert to fraction form
    18,191,875.80/27,291,750.30 = 5,413,672.20/x
  3. Step 3: Cross multiply
    18,191,875.80x = 27,291,750.30 × 5,413,672.20
  4. Step 4: Simplify right side
    18,191,875.80x = 147,748,589,888,451.66
  5. Step 5: Solve for x
    x = 147,748,589,888,451.66/18,191,875.80
  6. Step 6: Final answer
    x = 8,121,679.78

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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.