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Finding the Fourth Proportional to 20,151.60, 30,228 and 5,360.52

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Solution

The fourth proportional to 20,151.60, 30,228 and 5,360.52 is: 8,040.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.60 : 30,228 = 5,360.52 : x
  2. Step 2: Convert to fraction form
    20,151.60/30,228 = 5,360.52/x
  3. Step 3: Cross multiply
    20,151.60x = 30,228 × 5,360.52
  4. Step 4: Simplify right side
    20,151.60x = 162,037,798.56
  5. Step 5: Solve for x
    x = 162,037,798.56/20,151.60
  6. Step 6: Final answer
    x = 8,040.94

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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.