Home / 20,700.04-31,062.78-8,217.88

Finding the Fourth Proportional to 20,700.04, 31,062.78 and 8,217.88

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Solution

The fourth proportional to 20,700.04, 31,062.78 and 8,217.88 is: 12,331.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.04 : 31,062.78 = 8,217.88 : x
  2. Step 2: Convert to fraction form
    20,700.04/31,062.78 = 8,217.88/x
  3. Step 3: Cross multiply
    20,700.04x = 31,062.78 × 8,217.88
  4. Step 4: Simplify right side
    20,700.04x = 255,270,198.51
  5. Step 5: Solve for x
    x = 255,270,198.51/20,700.04
  6. Step 6: Final answer
    x = 12,331.87

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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.