Home / 21,222.44-31,833.68-8,071.72

Finding the Fourth Proportional to 21,222.44, 31,833.68 and 8,071.72

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Solution

The fourth proportional to 21,222.44, 31,833.68 and 8,071.72 is: 12,107.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.44 : 31,833.68 = 8,071.72 : x
  2. Step 2: Convert to fraction form
    21,222.44/31,833.68 = 8,071.72/x
  3. Step 3: Cross multiply
    21,222.44x = 31,833.68 × 8,071.72
  4. Step 4: Simplify right side
    21,222.44x = 256,952,551.53
  5. Step 5: Solve for x
    x = 256,952,551.53/21,222.44
  6. Step 6: Final answer
    x = 12,107.59

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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.