Home / 21,516.40-29,690.97-12,083.14

Finding the Fourth Proportional to 21,516.40, 29,690.97 and 12,083.14

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Solution

The fourth proportional to 21,516.40, 29,690.97 and 12,083.14 is: 16,673.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,516.40 : 29,690.97 = 12,083.14 : x
  2. Step 2: Convert to fraction form
    21,516.40/29,690.97 = 12,083.14/x
  3. Step 3: Cross multiply
    21,516.40x = 29,690.97 × 12,083.14
  4. Step 4: Simplify right side
    21,516.40x = 358,760,147.25
  5. Step 5: Solve for x
    x = 358,760,147.25/21,516.40
  6. Step 6: Final answer
    x = 16,673.80

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1.5x scale

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.