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Finding the Fourth Proportional to 31,658.44, 43,637.95 and 21,446.36

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Solution

The fourth proportional to 31,658.44, 43,637.95 and 21,446.36 is: 29,561.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,658.44 : 43,637.95 = 21,446.36 : x
  2. Step 2: Convert to fraction form
    31,658.44/43,637.95 = 21,446.36/x
  3. Step 3: Cross multiply
    31,658.44x = 43,637.95 × 21,446.36
  4. Step 4: Simplify right side
    31,658.44x = 935,875,220.04
  5. Step 5: Solve for x
    x = 935,875,220.04/31,658.44
  6. Step 6: Final answer
    x = 29,561.64

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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.