Home / 20,889.20-28,827.23-11,329.13

Finding the Fourth Proportional to 20,889.20, 28,827.23 and 11,329.13

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Solution

The fourth proportional to 20,889.20, 28,827.23 and 11,329.13 is: 15,634.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889.20 : 28,827.23 = 11,329.13 : x
  2. Step 2: Convert to fraction form
    20,889.20/28,827.23 = 11,329.13/x
  3. Step 3: Cross multiply
    20,889.20x = 28,827.23 × 11,329.13
  4. Step 4: Simplify right side
    20,889.20x = 326,587,235.43
  5. Step 5: Solve for x
    x = 326,587,235.43/20,889.20
  6. Step 6: Final answer
    x = 15,634.27

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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.