Home / 12,146.35-18,219.53-3,381.28

Finding the Fourth Proportional to 12,146.35, 18,219.53 and 3,381.28

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Solution

The fourth proportional to 12,146.35, 18,219.53 and 3,381.28 is: 5,071.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,146.35 : 18,219.53 = 3,381.28 : x
  2. Step 2: Convert to fraction form
    12,146.35/18,219.53 = 3,381.28/x
  3. Step 3: Cross multiply
    12,146.35x = 18,219.53 × 3,381.28
  4. Step 4: Simplify right side
    12,146.35x = 61,605,332.40
  5. Step 5: Solve for x
    x = 61,605,332.40/12,146.35
  6. Step 6: Final answer
    x = 5,071.92

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Similar ratio
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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.