Home / 15,531.27-21,433.74-8,817.18

Finding the Fourth Proportional to 15,531.27, 21,433.74 and 8,817.18

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Solution

The fourth proportional to 15,531.27, 21,433.74 and 8,817.18 is: 12,168.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.27 : 21,433.74 = 8,817.18 : x
  2. Step 2: Convert to fraction form
    15,531.27/21,433.74 = 8,817.18/x
  3. Step 3: Cross multiply
    15,531.27x = 21,433.74 × 8,817.18
  4. Step 4: Simplify right side
    15,531.27x = 188,985,143.65
  5. Step 5: Solve for x
    x = 188,985,143.65/15,531.27
  6. Step 6: Final answer
    x = 12,168.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.