Home / 21,079.73-31,588.31-8,584.47

Finding the Fourth Proportional to 21,079.73, 31,588.31 and 8,584.47

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Solution

The fourth proportional to 21,079.73, 31,588.31 and 8,584.47 is: 12,863.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.73 : 31,588.31 = 8,584.47 : x
  2. Step 2: Convert to fraction form
    21,079.73/31,588.31 = 8,584.47/x
  3. Step 3: Cross multiply
    21,079.73x = 31,588.31 × 8,584.47
  4. Step 4: Simplify right side
    21,079.73x = 271,168,899.55
  5. Step 5: Solve for x
    x = 271,168,899.55/21,079.73
  6. Step 6: Final answer
    x = 12,863.96

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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.