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Finding the Fourth Proportional to 22,438.89, 30,965.67 and 13,012.92

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Solution

The fourth proportional to 22,438.89, 30,965.67 and 13,012.92 is: 17,957.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,438.89 : 30,965.67 = 13,012.92 : x
  2. Step 2: Convert to fraction form
    22,438.89/30,965.67 = 13,012.92/x
  3. Step 3: Cross multiply
    22,438.89x = 30,965.67 × 13,012.92
  4. Step 4: Simplify right side
    22,438.89x = 402,953,786.46
  5. Step 5: Solve for x
    x = 402,953,786.46/22,438.89
  6. Step 6: Final answer
    x = 17,957.83

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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.