Home / 20,422.02-28,183.02-11,469.72

Finding the Fourth Proportional to 20,422.02, 28,183.02 and 11,469.72

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Solution

The fourth proportional to 20,422.02, 28,183.02 and 11,469.72 is: 15,828.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.02 : 28,183.02 = 11,469.72 : x
  2. Step 2: Convert to fraction form
    20,422.02/28,183.02 = 11,469.72/x
  3. Step 3: Cross multiply
    20,422.02x = 28,183.02 × 11,469.72
  4. Step 4: Simplify right side
    20,422.02x = 323,251,348.15
  5. Step 5: Solve for x
    x = 323,251,348.15/20,422.02
  6. Step 6: Final answer
    x = 15,828.57

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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.