Home / 20,353.26-28,086.68-11,400.30

Finding the Fourth Proportional to 20,353.26, 28,086.68 and 11,400.30

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Solution

The fourth proportional to 20,353.26, 28,086.68 and 11,400.30 is: 15,731.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,353.26 : 28,086.68 = 11,400.30 : x
  2. Step 2: Convert to fraction form
    20,353.26/28,086.68 = 11,400.30/x
  3. Step 3: Cross multiply
    20,353.26x = 28,086.68 × 11,400.30
  4. Step 4: Simplify right side
    20,353.26x = 320,196,606.50
  5. Step 5: Solve for x
    x = 320,196,606.50/20,353.26
  6. Step 6: Final answer
    x = 15,731.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.