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Finding the Fourth Proportional to 22,716, 31,352.22 and 21,719.70

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Solution

The fourth proportional to 22,716, 31,352.22 and 21,719.70 is: 29,977.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,716 : 31,352.22 = 21,719.70 : x
  2. Step 2: Convert to fraction form
    22,716/31,352.22 = 21,719.70/x
  3. Step 3: Cross multiply
    22,716x = 31,352.22 × 21,719.70
  4. Step 4: Simplify right side
    22,716x = 680,960,812.73
  5. Step 5: Solve for x
    x = 680,960,812.73/22,716
  6. Step 6: Final answer
    x = 29,977.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.