Home / 20,211.28-30,284.16-13,182.88

Finding the Fourth Proportional to 20,211.28, 30,284.16 and 13,182.88

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Solution

The fourth proportional to 20,211.28, 30,284.16 and 13,182.88 is: 19,752.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.28 : 30,284.16 = 13,182.88 : x
  2. Step 2: Convert to fraction form
    20,211.28/30,284.16 = 13,182.88/x
  3. Step 3: Cross multiply
    20,211.28x = 30,284.16 × 13,182.88
  4. Step 4: Simplify right side
    20,211.28x = 399,232,447.18
  5. Step 5: Solve for x
    x = 399,232,447.18/20,211.28
  6. Step 6: Final answer
    x = 19,752.95

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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.