Home / 12,218.28-18,323.79-6,371.70

Finding the Fourth Proportional to 12,218.28, 18,323.79 and 6,371.70

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Solution

The fourth proportional to 12,218.28, 18,323.79 and 6,371.70 is: 9,555.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.28 : 18,323.79 = 6,371.70 : x
  2. Step 2: Convert to fraction form
    12,218.28/18,323.79 = 6,371.70/x
  3. Step 3: Cross multiply
    12,218.28x = 18,323.79 × 6,371.70
  4. Step 4: Simplify right side
    12,218.28x = 116,753,692.74
  5. Step 5: Solve for x
    x = 116,753,692.74/12,218.28
  6. Step 6: Final answer
    x = 9,555.66

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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.