Home / 21,633.38-29,857.01-12,684.45

Finding the Fourth Proportional to 21,633.38, 29,857.01 and 12,684.45

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Solution

The fourth proportional to 21,633.38, 29,857.01 and 12,684.45 is: 17,506.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,633.38 : 29,857.01 = 12,684.45 : x
  2. Step 2: Convert to fraction form
    21,633.38/29,857.01 = 12,684.45/x
  3. Step 3: Cross multiply
    21,633.38x = 29,857.01 × 12,684.45
  4. Step 4: Simplify right side
    21,633.38x = 378,719,631.09
  5. Step 5: Solve for x
    x = 378,719,631.09/21,633.38
  6. Step 6: Final answer
    x = 17,506.26

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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.