Home / 20,189.72-30,304.02-18,916.44

Finding the Fourth Proportional to 20,189.72, 30,304.02 and 18,916.44

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Solution

The fourth proportional to 20,189.72, 30,304.02 and 18,916.44 is: 28,392.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.72 : 30,304.02 = 18,916.44 : x
  2. Step 2: Convert to fraction form
    20,189.72/30,304.02 = 18,916.44/x
  3. Step 3: Cross multiply
    20,189.72x = 30,304.02 × 18,916.44
  4. Step 4: Simplify right side
    20,189.72x = 573,244,176.09
  5. Step 5: Solve for x
    x = 573,244,176.09/20,189.72
  6. Step 6: Final answer
    x = 28,392.87

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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.