Home / 20,446.36-30,623.10-18,081.88

Finding the Fourth Proportional to 20,446.36, 30,623.10 and 18,081.88

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Solution

The fourth proportional to 20,446.36, 30,623.10 and 18,081.88 is: 27,081.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,446.36 : 30,623.10 = 18,081.88 : x
  2. Step 2: Convert to fraction form
    20,446.36/30,623.10 = 18,081.88/x
  3. Step 3: Cross multiply
    20,446.36x = 30,623.10 × 18,081.88
  4. Step 4: Simplify right side
    20,446.36x = 553,723,219.43
  5. Step 5: Solve for x
    x = 553,723,219.43/20,446.36
  6. Step 6: Final answer
    x = 27,081.75

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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.