Home / 12,236.80-18,344.40-7,301.20

Finding the Fourth Proportional to 12,236.80, 18,344.40 and 7,301.20

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Solution

The fourth proportional to 12,236.80, 18,344.40 and 7,301.20 is: 10,945.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,236.80 : 18,344.40 = 7,301.20 : x
  2. Step 2: Convert to fraction form
    12,236.80/18,344.40 = 7,301.20/x
  3. Step 3: Cross multiply
    12,236.80x = 18,344.40 × 7,301.20
  4. Step 4: Simplify right side
    12,236.80x = 133,936,133.28
  5. Step 5: Solve for x
    x = 133,936,133.28/12,236.80
  6. Step 6: Final answer
    x = 10,945.36

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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.