Home / 38,506.20-57,697.20-21,816.60

Finding the Fourth Proportional to 38,506.20, 57,697.20 and 21,816.60

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Solution

The fourth proportional to 38,506.20, 57,697.20 and 21,816.60 is: 32,689.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,506.20 : 57,697.20 = 21,816.60 : x
  2. Step 2: Convert to fraction form
    38,506.20/57,697.20 = 21,816.60/x
  3. Step 3: Cross multiply
    38,506.20x = 57,697.20 × 21,816.60
  4. Step 4: Simplify right side
    38,506.20x = 1,258,756,733.52
  5. Step 5: Solve for x
    x = 1,258,756,733.52/38,506.20
  6. Step 6: Final answer
    x = 32,689.72

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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.