Home / 17,921.25-26,708.25-16,988.13

Finding the Fourth Proportional to 17,921.25, 26,708.25 and 16,988.13

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Solution

The fourth proportional to 17,921.25, 26,708.25 and 16,988.13 is: 25,317.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,921.25 : 26,708.25 = 16,988.13 : x
  2. Step 2: Convert to fraction form
    17,921.25/26,708.25 = 16,988.13/x
  3. Step 3: Cross multiply
    17,921.25x = 26,708.25 × 16,988.13
  4. Step 4: Simplify right side
    17,921.25x = 453,723,138.13
  5. Step 5: Solve for x
    x = 453,723,138.13/17,921.25
  6. Step 6: Final answer
    x = 25,317.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.