Home / 20,618.26-30,887.58-12,304.91

Finding the Fourth Proportional to 20,618.26, 30,887.58 and 12,304.91

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Solution

The fourth proportional to 20,618.26, 30,887.58 and 12,304.91 is: 18,433.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.26 : 30,887.58 = 12,304.91 : x
  2. Step 2: Convert to fraction form
    20,618.26/30,887.58 = 12,304.91/x
  3. Step 3: Cross multiply
    20,618.26x = 30,887.58 × 12,304.91
  4. Step 4: Simplify right side
    20,618.26x = 380,068,892.02
  5. Step 5: Solve for x
    x = 380,068,892.02/20,618.26
  6. Step 6: Final answer
    x = 18,433.61

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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.