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Finding the Fourth Proportional to 21,502.68, 29,673.69 and 12,071.23

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Solution

The fourth proportional to 21,502.68, 29,673.69 and 12,071.23 is: 16,658.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,502.68 : 29,673.69 = 12,071.23 : x
  2. Step 2: Convert to fraction form
    21,502.68/29,673.69 = 12,071.23/x
  3. Step 3: Cross multiply
    21,502.68x = 29,673.69 × 12,071.23
  4. Step 4: Simplify right side
    21,502.68x = 358,197,936.94
  5. Step 5: Solve for x
    x = 358,197,936.94/21,502.68
  6. Step 6: Final answer
    x = 16,658.29

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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.