Home / 11,685.12-17,521.44-3,891.12

Finding the Fourth Proportional to 11,685.12, 17,521.44 and 3,891.12

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Solution

The fourth proportional to 11,685.12, 17,521.44 and 3,891.12 is: 5,834.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.12 : 17,521.44 = 3,891.12 : x
  2. Step 2: Convert to fraction form
    11,685.12/17,521.44 = 3,891.12/x
  3. Step 3: Cross multiply
    11,685.12x = 17,521.44 × 3,891.12
  4. Step 4: Simplify right side
    11,685.12x = 68,178,025.61
  5. Step 5: Solve for x
    x = 68,178,025.61/11,685.12
  6. Step 6: Final answer
    x = 5,834.60

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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.