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Finding the Fourth Proportional to 22,262.70, 30,712.95 and 12,825.66

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Solution

The fourth proportional to 22,262.70, 30,712.95 and 12,825.66 is: 17,693.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,262.70 : 30,712.95 = 12,825.66 : x
  2. Step 2: Convert to fraction form
    22,262.70/30,712.95 = 12,825.66/x
  3. Step 3: Cross multiply
    22,262.70x = 30,712.95 × 12,825.66
  4. Step 4: Simplify right side
    22,262.70x = 393,913,854.30
  5. Step 5: Solve for x
    x = 393,913,854.30/22,262.70
  6. Step 6: Final answer
    x = 17,693.89

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