Home / 11,979.78-17,956.17-5,317.53

Finding the Fourth Proportional to 11,979.78, 17,956.17 and 5,317.53

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Solution

The fourth proportional to 11,979.78, 17,956.17 and 5,317.53 is: 7,970.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.78 : 17,956.17 = 5,317.53 : x
  2. Step 2: Convert to fraction form
    11,979.78/17,956.17 = 5,317.53/x
  3. Step 3: Cross multiply
    11,979.78x = 17,956.17 × 5,317.53
  4. Step 4: Simplify right side
    11,979.78x = 95,482,472.66
  5. Step 5: Solve for x
    x = 95,482,472.66/11,979.78
  6. Step 6: Final answer
    x = 7,970.30

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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.