Home / 20,995.29-31,494.08-8,513.46

Finding the Fourth Proportional to 20,995.29, 31,494.08 and 8,513.46

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Solution

The fourth proportional to 20,995.29, 31,494.08 and 8,513.46 is: 12,770.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.29 : 31,494.08 = 8,513.46 : x
  2. Step 2: Convert to fraction form
    20,995.29/31,494.08 = 8,513.46/x
  3. Step 3: Cross multiply
    20,995.29x = 31,494.08 × 8,513.46
  4. Step 4: Simplify right side
    20,995.29x = 268,123,611.60
  5. Step 5: Solve for x
    x = 268,123,611.60/20,995.29
  6. Step 6: Final answer
    x = 12,770.66

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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.