Home / 12,510.28-18,760.80-3,742.20

Finding the Fourth Proportional to 12,510.28, 18,760.80 and 3,742.20

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Solution

The fourth proportional to 12,510.28, 18,760.80 and 3,742.20 is: 5,611.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,510.28 : 18,760.80 = 3,742.20 : x
  2. Step 2: Convert to fraction form
    12,510.28/18,760.80 = 3,742.20/x
  3. Step 3: Cross multiply
    12,510.28x = 18,760.80 × 3,742.20
  4. Step 4: Simplify right side
    12,510.28x = 70,206,665.76
  5. Step 5: Solve for x
    x = 70,206,665.76/12,510.28
  6. Step 6: Final answer
    x = 5,611.92

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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.