Home / 20,988.56-31,482.90-8,508.82

Finding the Fourth Proportional to 20,988.56, 31,482.90 and 8,508.82

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Solution

The fourth proportional to 20,988.56, 31,482.90 and 8,508.82 is: 12,763.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,988.56 : 31,482.90 = 8,508.82 : x
  2. Step 2: Convert to fraction form
    20,988.56/31,482.90 = 8,508.82/x
  3. Step 3: Cross multiply
    20,988.56x = 31,482.90 × 8,508.82
  4. Step 4: Simplify right side
    20,988.56x = 267,882,329.18
  5. Step 5: Solve for x
    x = 267,882,329.18/20,988.56
  6. Step 6: Final answer
    x = 12,763.25

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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.