Home / 21,614.38-29,827.84-11,678.38

Finding the Fourth Proportional to 21,614.38, 29,827.84 and 11,678.38

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Solution

The fourth proportional to 21,614.38, 29,827.84 and 11,678.38 is: 16,116.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,614.38 : 29,827.84 = 11,678.38 : x
  2. Step 2: Convert to fraction form
    21,614.38/29,827.84 = 11,678.38/x
  3. Step 3: Cross multiply
    21,614.38x = 29,827.84 × 11,678.38
  4. Step 4: Simplify right side
    21,614.38x = 348,340,850.10
  5. Step 5: Solve for x
    x = 348,340,850.10/21,614.38
  6. Step 6: Final answer
    x = 16,116.16

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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.