Home / 20,653.38-28,480.14-17,679.06

Finding the Fourth Proportional to 20,653.38, 28,480.14 and 17,679.06

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Solution

The fourth proportional to 20,653.38, 28,480.14 and 17,679.06 is: 24,378.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.38 : 28,480.14 = 17,679.06 : x
  2. Step 2: Convert to fraction form
    20,653.38/28,480.14 = 17,679.06/x
  3. Step 3: Cross multiply
    20,653.38x = 28,480.14 × 17,679.06
  4. Step 4: Simplify right side
    20,653.38x = 503,502,103.87
  5. Step 5: Solve for x
    x = 503,502,103.87/20,653.38
  6. Step 6: Final answer
    x = 24,378.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.