Home / 21,426.30-29,567.97-11,995.20

Finding the Fourth Proportional to 21,426.30, 29,567.97 and 11,995.20

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Solution

The fourth proportional to 21,426.30, 29,567.97 and 11,995.20 is: 16,553.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,426.30 : 29,567.97 = 11,995.20 : x
  2. Step 2: Convert to fraction form
    21,426.30/29,567.97 = 11,995.20/x
  3. Step 3: Cross multiply
    21,426.30x = 29,567.97 × 11,995.20
  4. Step 4: Simplify right side
    21,426.30x = 354,673,713.74
  5. Step 5: Solve for x
    x = 354,673,713.74/21,426.30
  6. Step 6: Final answer
    x = 16,553.19

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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.