Home / 12,381.24-18,572.70-3,616.20

Finding the Fourth Proportional to 12,381.24, 18,572.70 and 3,616.20

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Solution

The fourth proportional to 12,381.24, 18,572.70 and 3,616.20 is: 5,424.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,381.24 : 18,572.70 = 3,616.20 : x
  2. Step 2: Convert to fraction form
    12,381.24/18,572.70 = 3,616.20/x
  3. Step 3: Cross multiply
    12,381.24x = 18,572.70 × 3,616.20
  4. Step 4: Simplify right side
    12,381.24x = 67,162,597.74
  5. Step 5: Solve for x
    x = 67,162,597.74/12,381.24
  6. Step 6: Final answer
    x = 5,424.55

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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.