Home / 20,729.12-28,588.92-15,052.64

Finding the Fourth Proportional to 20,729.12, 28,588.92 and 15,052.64

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Solution

The fourth proportional to 20,729.12, 28,588.92 and 15,052.64 is: 20,760.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.12 : 28,588.92 = 15,052.64 : x
  2. Step 2: Convert to fraction form
    20,729.12/28,588.92 = 15,052.64/x
  3. Step 3: Cross multiply
    20,729.12x = 28,588.92 × 15,052.64
  4. Step 4: Simplify right side
    20,729.12x = 430,338,720.75
  5. Step 5: Solve for x
    x = 430,338,720.75/20,729.12
  6. Step 6: Final answer
    x = 20,760.11

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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.