Home / 13,979.52-20,972.16-11,687.04

Finding the Fourth Proportional to 13,979.52, 20,972.16 and 11,687.04

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Solution

The fourth proportional to 13,979.52, 20,972.16 and 11,687.04 is: 17,532.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.52 : 20,972.16 = 11,687.04 : x
  2. Step 2: Convert to fraction form
    13,979.52/20,972.16 = 11,687.04/x
  3. Step 3: Cross multiply
    13,979.52x = 20,972.16 × 11,687.04
  4. Step 4: Simplify right side
    13,979.52x = 245,102,472.81
  5. Step 5: Solve for x
    x = 245,102,472.81/13,979.52
  6. Step 6: Final answer
    x = 17,532.97

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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.