Home / 20,378.12-30,565.14-5,588.53

Finding the Fourth Proportional to 20,378.12, 30,565.14 and 5,588.53

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Solution

The fourth proportional to 20,378.12, 30,565.14 and 5,588.53 is: 8,382.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.12 : 30,565.14 = 5,588.53 : x
  2. Step 2: Convert to fraction form
    20,378.12/30,565.14 = 5,588.53/x
  3. Step 3: Cross multiply
    20,378.12x = 30,565.14 × 5,588.53
  4. Step 4: Simplify right side
    20,378.12x = 170,814,104.47
  5. Step 5: Solve for x
    x = 170,814,104.47/20,378.12
  6. Step 6: Final answer
    x = 8,382.23

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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.