Home / 20,171.10-30,256.65-12,735.30

Finding the Fourth Proportional to 20,171.10, 30,256.65 and 12,735.30

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Solution

The fourth proportional to 20,171.10, 30,256.65 and 12,735.30 is: 19,102.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.10 : 30,256.65 = 12,735.30 : x
  2. Step 2: Convert to fraction form
    20,171.10/30,256.65 = 12,735.30/x
  3. Step 3: Cross multiply
    20,171.10x = 30,256.65 × 12,735.30
  4. Step 4: Simplify right side
    20,171.10x = 385,327,514.75
  5. Step 5: Solve for x
    x = 385,327,514.75/20,171.10
  6. Step 6: Final answer
    x = 19,102.95

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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.