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Finding the Fourth Proportional to 22,290.60, 30,771.72 and 17,809.68

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Solution

The fourth proportional to 22,290.60, 30,771.72 and 17,809.68 is: 24,585.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,290.60 : 30,771.72 = 17,809.68 : x
  2. Step 2: Convert to fraction form
    22,290.60/30,771.72 = 17,809.68/x
  3. Step 3: Cross multiply
    22,290.60x = 30,771.72 × 17,809.68
  4. Step 4: Simplify right side
    22,290.60x = 548,034,486.25
  5. Step 5: Solve for x
    x = 548,034,486.25/22,290.60
  6. Step 6: Final answer
    x = 24,585.90

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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.