Home / 12,304.80-18,457.20-7,371.90

Finding the Fourth Proportional to 12,304.80, 18,457.20 and 7,371.90

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Solution

The fourth proportional to 12,304.80, 18,457.20 and 7,371.90 is: 11,057.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,304.80 : 18,457.20 = 7,371.90 : x
  2. Step 2: Convert to fraction form
    12,304.80/18,457.20 = 7,371.90/x
  3. Step 3: Cross multiply
    12,304.80x = 18,457.20 × 7,371.90
  4. Step 4: Simplify right side
    12,304.80x = 136,064,632.68
  5. Step 5: Solve for x
    x = 136,064,632.68/12,304.80
  6. Step 6: Final answer
    x = 11,057.85

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Similar ratio
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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.