Home / 34,144.26-47,115.28-20,718.78

Finding the Fourth Proportional to 34,144.26, 47,115.28 and 20,718.78

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Solution

The fourth proportional to 34,144.26, 47,115.28 and 20,718.78 is: 28,589.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,144.26 : 47,115.28 = 20,718.78 : x
  2. Step 2: Convert to fraction form
    34,144.26/47,115.28 = 20,718.78/x
  3. Step 3: Cross multiply
    34,144.26x = 47,115.28 × 20,718.78
  4. Step 4: Simplify right side
    34,144.26x = 976,171,017.36
  5. Step 5: Solve for x
    x = 976,171,017.36/34,144.26
  6. Step 6: Final answer
    x = 28,589.61

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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.