Home / 20,242.51-30,383.20-9,861.55

Finding the Fourth Proportional to 20,242.51, 30,383.20 and 9,861.55

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Solution

The fourth proportional to 20,242.51, 30,383.20 and 9,861.55 is: 14,801.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.51 : 30,383.20 = 9,861.55 : x
  2. Step 2: Convert to fraction form
    20,242.51/30,383.20 = 9,861.55/x
  3. Step 3: Cross multiply
    20,242.51x = 30,383.20 × 9,861.55
  4. Step 4: Simplify right side
    20,242.51x = 299,625,382.33
  5. Step 5: Solve for x
    x = 299,625,382.33/20,242.51
  6. Step 6: Final answer
    x = 14,801.79

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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.