Home / 13,021.28-17,969.20-7,052.86

Finding the Fourth Proportional to 13,021.28, 17,969.20 and 7,052.86

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Solution

The fourth proportional to 13,021.28, 17,969.20 and 7,052.86 is: 9,732.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.28 : 17,969.20 = 7,052.86 : x
  2. Step 2: Convert to fraction form
    13,021.28/17,969.20 = 7,052.86/x
  3. Step 3: Cross multiply
    13,021.28x = 17,969.20 × 7,052.86
  4. Step 4: Simplify right side
    13,021.28x = 126,734,251.91
  5. Step 5: Solve for x
    x = 126,734,251.91/13,021.28
  6. Step 6: Final answer
    x = 9,732.86

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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.