Home / 12,180.20-18,270.30-9,264.20

Finding the Fourth Proportional to 12,180.20, 18,270.30 and 9,264.20

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Solution

The fourth proportional to 12,180.20, 18,270.30 and 9,264.20 is: 13,896.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.20 : 18,270.30 = 9,264.20 : x
  2. Step 2: Convert to fraction form
    12,180.20/18,270.30 = 9,264.20/x
  3. Step 3: Cross multiply
    12,180.20x = 18,270.30 × 9,264.20
  4. Step 4: Simplify right side
    12,180.20x = 169,259,713.26
  5. Step 5: Solve for x
    x = 169,259,713.26/12,180.20
  6. Step 6: Final answer
    x = 13,896.30

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1.5x scale

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.