Home / 20,520.93-28,319.13-11,568.44

Finding the Fourth Proportional to 20,520.93, 28,319.13 and 11,568.44

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Solution

The fourth proportional to 20,520.93, 28,319.13 and 11,568.44 is: 15,964.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520.93 : 28,319.13 = 11,568.44 : x
  2. Step 2: Convert to fraction form
    20,520.93/28,319.13 = 11,568.44/x
  3. Step 3: Cross multiply
    20,520.93x = 28,319.13 × 11,568.44
  4. Step 4: Simplify right side
    20,520.93x = 327,608,156.26
  5. Step 5: Solve for x
    x = 327,608,156.26/20,520.93
  6. Step 6: Final answer
    x = 15,964.59

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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.