Home / 20,481.39-28,264.01-11,528.87

Finding the Fourth Proportional to 20,481.39, 28,264.01 and 11,528.87

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Solution

The fourth proportional to 20,481.39, 28,264.01 and 11,528.87 is: 15,909.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.39 : 28,264.01 = 11,528.87 : x
  2. Step 2: Convert to fraction form
    20,481.39/28,264.01 = 11,528.87/x
  3. Step 3: Cross multiply
    20,481.39x = 28,264.01 × 11,528.87
  4. Step 4: Simplify right side
    20,481.39x = 325,851,898.00
  5. Step 5: Solve for x
    x = 325,851,898.00/20,481.39
  6. Step 6: Final answer
    x = 15,909.66

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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.