Home / 20,785.27-28,625.42-19,451.23

Finding the Fourth Proportional to 20,785.27, 28,625.42 and 19,451.23

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Solution

The fourth proportional to 20,785.27, 28,625.42 and 19,451.23 is: 26,788.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785.27 : 28,625.42 = 19,451.23 : x
  2. Step 2: Convert to fraction form
    20,785.27/28,625.42 = 19,451.23/x
  3. Step 3: Cross multiply
    20,785.27x = 28,625.42 × 19,451.23
  4. Step 4: Simplify right side
    20,785.27x = 556,799,531.01
  5. Step 5: Solve for x
    x = 556,799,531.01/20,785.27
  6. Step 6: Final answer
    x = 26,788.18

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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.