Home / 22,182.20-30,611.03-12,621.88

Finding the Fourth Proportional to 22,182.20, 30,611.03 and 12,621.88

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Solution

The fourth proportional to 22,182.20, 30,611.03 and 12,621.88 is: 17,417.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,182.20 : 30,611.03 = 12,621.88 : x
  2. Step 2: Convert to fraction form
    22,182.20/30,611.03 = 12,621.88/x
  3. Step 3: Cross multiply
    22,182.20x = 30,611.03 × 12,621.88
  4. Step 4: Simplify right side
    22,182.20x = 386,368,568.05
  5. Step 5: Solve for x
    x = 386,368,568.05/22,182.20
  6. Step 6: Final answer
    x = 17,417.95

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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.