Home / 20,305.27-30,314.26-18,191.17

Finding the Fourth Proportional to 20,305.27, 30,314.26 and 18,191.17

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Solution

The fourth proportional to 20,305.27, 30,314.26 and 18,191.17 is: 27,158.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,305.27 : 30,314.26 = 18,191.17 : x
  2. Step 2: Convert to fraction form
    20,305.27/30,314.26 = 18,191.17/x
  3. Step 3: Cross multiply
    20,305.27x = 30,314.26 × 18,191.17
  4. Step 4: Simplify right side
    20,305.27x = 551,451,857.08
  5. Step 5: Solve for x
    x = 551,451,857.08/20,305.27
  6. Step 6: Final answer
    x = 27,158.07

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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.