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Finding the Fourth Proportional to 20,443.94, 30,514.22 and 17,620.68

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Solution

The fourth proportional to 20,443.94, 30,514.22 and 17,620.68 is: 26,300.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.94 : 30,514.22 = 17,620.68 : x
  2. Step 2: Convert to fraction form
    20,443.94/30,514.22 = 17,620.68/x
  3. Step 3: Cross multiply
    20,443.94x = 30,514.22 × 17,620.68
  4. Step 4: Simplify right side
    20,443.94x = 537,681,350.12
  5. Step 5: Solve for x
    x = 537,681,350.12/20,443.94
  6. Step 6: Final answer
    x = 26,300.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.