Home / 14,146.56-21,185.28-12,211.20

Finding the Fourth Proportional to 14,146.56, 21,185.28 and 12,211.20

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Solution

The fourth proportional to 14,146.56, 21,185.28 and 12,211.20 is: 18,286.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,146.56 : 21,185.28 = 12,211.20 : x
  2. Step 2: Convert to fraction form
    14,146.56/21,185.28 = 12,211.20/x
  3. Step 3: Cross multiply
    14,146.56x = 21,185.28 × 12,211.20
  4. Step 4: Simplify right side
    14,146.56x = 258,697,691.14
  5. Step 5: Solve for x
    x = 258,697,691.14/14,146.56
  6. Step 6: Final answer
    x = 18,286.97

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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.