Home / 21,164.73-31,719.68-15,857.91

Finding the Fourth Proportional to 21,164.73, 31,719.68 and 15,857.91

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Solution

The fourth proportional to 21,164.73, 31,719.68 and 15,857.91 is: 23,766.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,164.73 : 31,719.68 = 15,857.91 : x
  2. Step 2: Convert to fraction form
    21,164.73/31,719.68 = 15,857.91/x
  3. Step 3: Cross multiply
    21,164.73x = 31,719.68 × 15,857.91
  4. Step 4: Simplify right side
    21,164.73x = 503,007,751.38
  5. Step 5: Solve for x
    x = 503,007,751.38/21,164.73
  6. Step 6: Final answer
    x = 23,766.32

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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.