Home / 20,139,687.30-30,138,672.15-18,439,076.10

Finding the Fourth Proportional to 20,139,687.30, 30,138,672.15 and 18,439,076.10

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Solution

The fourth proportional to 20,139,687.30, 30,138,672.15 and 18,439,076.10 is: 27,593,738.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139,687.30 : 30,138,672.15 = 18,439,076.10 : x
  2. Step 2: Convert to fraction form
    20,139,687.30/30,138,672.15 = 18,439,076.10/x
  3. Step 3: Cross multiply
    20,139,687.30x = 30,138,672.15 × 18,439,076.10
  4. Step 4: Simplify right side
    20,139,687.30x = 555,729,269,326,800.62
  5. Step 5: Solve for x
    x = 555,729,269,326,800.62/20,139,687.30
  6. Step 6: Final answer
    x = 27,593,738.72

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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.