Home / 21,125.41-31,692.87-7,086.18

Finding the Fourth Proportional to 21,125.41, 31,692.87 and 7,086.18

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Solution

The fourth proportional to 21,125.41, 31,692.87 and 7,086.18 is: 10,630.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.41 : 31,692.87 = 7,086.18 : x
  2. Step 2: Convert to fraction form
    21,125.41/31,692.87 = 7,086.18/x
  3. Step 3: Cross multiply
    21,125.41x = 31,692.87 × 7,086.18
  4. Step 4: Simplify right side
    21,125.41x = 224,581,500.38
  5. Step 5: Solve for x
    x = 224,581,500.38/21,125.41
  6. Step 6: Final answer
    x = 10,630.87

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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.