Home / 12,731.18-19,100.46-3,966.20

Finding the Fourth Proportional to 12,731.18, 19,100.46 and 3,966.20

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Solution

The fourth proportional to 12,731.18, 19,100.46 and 3,966.20 is: 5,950.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.18 : 19,100.46 = 3,966.20 : x
  2. Step 2: Convert to fraction form
    12,731.18/19,100.46 = 3,966.20/x
  3. Step 3: Cross multiply
    12,731.18x = 19,100.46 × 3,966.20
  4. Step 4: Simplify right side
    12,731.18x = 75,756,244.45
  5. Step 5: Solve for x
    x = 75,756,244.45/12,731.18
  6. Step 6: Final answer
    x = 5,950.45

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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.