Home / 12,083,725.20-18,135,502.20-11,989,246.80

Finding the Fourth Proportional to 12,083,725.20, 18,135,502.20 and 11,989,246.80

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Solution

The fourth proportional to 12,083,725.20, 18,135,502.20 and 11,989,246.80 is: 17,993,707.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,083,725.20 : 18,135,502.20 = 11,989,246.80 : x
  2. Step 2: Convert to fraction form
    12,083,725.20/18,135,502.20 = 11,989,246.80/x
  3. Step 3: Cross multiply
    12,083,725.20x = 18,135,502.20 × 11,989,246.80
  4. Step 4: Simplify right side
    12,083,725.20x = 217,431,011,717,742.97
  5. Step 5: Solve for x
    x = 217,431,011,717,742.97/12,083,725.20
  6. Step 6: Final answer
    x = 17,993,707.08

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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.