Home / 21,122.62-31,672.56-8,466.02

Finding the Fourth Proportional to 21,122.62, 31,672.56 and 8,466.02

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Solution

The fourth proportional to 21,122.62, 31,672.56 and 8,466.02 is: 12,694.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122.62 : 31,672.56 = 8,466.02 : x
  2. Step 2: Convert to fraction form
    21,122.62/31,672.56 = 8,466.02/x
  3. Step 3: Cross multiply
    21,122.62x = 31,672.56 × 8,466.02
  4. Step 4: Simplify right side
    21,122.62x = 268,140,693.65
  5. Step 5: Solve for x
    x = 268,140,693.65/21,122.62
  6. Step 6: Final answer
    x = 12,694.48

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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.