Home / 12,721.60-19,082.72-3,956.32

Finding the Fourth Proportional to 12,721.60, 19,082.72 and 3,956.32

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Solution

The fourth proportional to 12,721.60, 19,082.72 and 3,956.32 is: 5,934.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.60 : 19,082.72 = 3,956.32 : x
  2. Step 2: Convert to fraction form
    12,721.60/19,082.72 = 3,956.32/x
  3. Step 3: Cross multiply
    12,721.60x = 19,082.72 × 3,956.32
  4. Step 4: Simplify right side
    12,721.60x = 75,497,346.79
  5. Step 5: Solve for x
    x = 75,497,346.79/12,721.60
  6. Step 6: Final answer
    x = 5,934.58

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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.