Home / 16,820.20-25,227.60-5,130.70

Finding the Fourth Proportional to 16,820.20, 25,227.60 and 5,130.70

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Solution

The fourth proportional to 16,820.20, 25,227.60 and 5,130.70 is: 7,695.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,820.20 : 25,227.60 = 5,130.70 : x
  2. Step 2: Convert to fraction form
    16,820.20/25,227.60 = 5,130.70/x
  3. Step 3: Cross multiply
    16,820.20x = 25,227.60 × 5,130.70
  4. Step 4: Simplify right side
    16,820.20x = 129,435,247.32
  5. Step 5: Solve for x
    x = 129,435,247.32/16,820.20
  6. Step 6: Final answer
    x = 7,695.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.