Home / 20,378.26-30,561.52-5,587.66

Finding the Fourth Proportional to 20,378.26, 30,561.52 and 5,587.66

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Solution

The fourth proportional to 20,378.26, 30,561.52 and 5,587.66 is: 8,379.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.26 : 30,561.52 = 5,587.66 : x
  2. Step 2: Convert to fraction form
    20,378.26/30,561.52 = 5,587.66/x
  3. Step 3: Cross multiply
    20,378.26x = 30,561.52 × 5,587.66
  4. Step 4: Simplify right side
    20,378.26x = 170,767,382.84
  5. Step 5: Solve for x
    x = 170,767,382.84/20,378.26
  6. Step 6: Final answer
    x = 8,379.88

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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.