Home / 21,178.30-29,224.10-11,745.04

Finding the Fourth Proportional to 21,178.30, 29,224.10 and 11,745.04

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Solution

The fourth proportional to 21,178.30, 29,224.10 and 11,745.04 is: 16,207.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.30 : 29,224.10 = 11,745.04 : x
  2. Step 2: Convert to fraction form
    21,178.30/29,224.10 = 11,745.04/x
  3. Step 3: Cross multiply
    21,178.30x = 29,224.10 × 11,745.04
  4. Step 4: Simplify right side
    21,178.30x = 343,238,223.46
  5. Step 5: Solve for x
    x = 343,238,223.46/21,178.30
  6. Step 6: Final answer
    x = 16,207.07

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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.