Home / 12,257.90-18,382.29-3,935.76

Finding the Fourth Proportional to 12,257.90, 18,382.29 and 3,935.76

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Solution

The fourth proportional to 12,257.90, 18,382.29 and 3,935.76 is: 5,902.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,257.90 : 18,382.29 = 3,935.76 : x
  2. Step 2: Convert to fraction form
    12,257.90/18,382.29 = 3,935.76/x
  3. Step 3: Cross multiply
    12,257.90x = 18,382.29 × 3,935.76
  4. Step 4: Simplify right side
    12,257.90x = 72,348,281.69
  5. Step 5: Solve for x
    x = 72,348,281.69/12,257.90
  6. Step 6: Final answer
    x = 5,902.18

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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.