Home / 16,979.76-25,422.16-12,806.70

Finding the Fourth Proportional to 16,979.76, 25,422.16 and 12,806.70

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Solution

The fourth proportional to 16,979.76, 25,422.16 and 12,806.70 is: 19,174.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,979.76 : 25,422.16 = 12,806.70 : x
  2. Step 2: Convert to fraction form
    16,979.76/25,422.16 = 12,806.70/x
  3. Step 3: Cross multiply
    16,979.76x = 25,422.16 × 12,806.70
  4. Step 4: Simplify right side
    16,979.76x = 325,573,976.47
  5. Step 5: Solve for x
    x = 325,573,976.47/16,979.76
  6. Step 6: Final answer
    x = 19,174.24

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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.