Home / 20,040.18-27,649.94-12,487.74

Finding the Fourth Proportional to 20,040.18, 27,649.94 and 12,487.74

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Solution

The fourth proportional to 20,040.18, 27,649.94 and 12,487.74 is: 17,229.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,040.18 : 27,649.94 = 12,487.74 : x
  2. Step 2: Convert to fraction form
    20,040.18/27,649.94 = 12,487.74/x
  3. Step 3: Cross multiply
    20,040.18x = 27,649.94 × 12,487.74
  4. Step 4: Simplify right side
    20,040.18x = 345,285,261.74
  5. Step 5: Solve for x
    x = 345,285,261.74/20,040.18
  6. Step 6: Final answer
    x = 17,229.65

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1.5x scale

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.