Home / 21,247.21-31,869.91-5,452.12

Finding the Fourth Proportional to 21,247.21, 31,869.91 and 5,452.12

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Solution

The fourth proportional to 21,247.21, 31,869.91 and 5,452.12 is: 8,177.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.21 : 31,869.91 = 5,452.12 : x
  2. Step 2: Convert to fraction form
    21,247.21/31,869.91 = 5,452.12/x
  3. Step 3: Cross multiply
    21,247.21x = 31,869.91 × 5,452.12
  4. Step 4: Simplify right side
    21,247.21x = 173,758,573.71
  5. Step 5: Solve for x
    x = 173,758,573.71/21,247.21
  6. Step 6: Final answer
    x = 8,177.95

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1.5x scale

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.