Home / 16,979.09-25,478.55-7,117.61

Finding the Fourth Proportional to 16,979.09, 25,478.55 and 7,117.61

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Solution

The fourth proportional to 16,979.09, 25,478.55 and 7,117.61 is: 10,680.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,979.09 : 25,478.55 = 7,117.61 : x
  2. Step 2: Convert to fraction form
    16,979.09/25,478.55 = 7,117.61/x
  3. Step 3: Cross multiply
    16,979.09x = 25,478.55 × 7,117.61
  4. Step 4: Simplify right side
    16,979.09x = 181,346,382.27
  5. Step 5: Solve for x
    x = 181,346,382.27/16,979.09
  6. Step 6: Final answer
    x = 10,680.57

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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.