Home / 21,144.24-29,177.58-11,712

Finding the Fourth Proportional to 21,144.24, 29,177.58 and 11,712

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Solution

The fourth proportional to 21,144.24, 29,177.58 and 11,712 is: 16,161.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.24 : 29,177.58 = 11,712 : x
  2. Step 2: Convert to fraction form
    21,144.24/29,177.58 = 11,712/x
  3. Step 3: Cross multiply
    21,144.24x = 29,177.58 × 11,712
  4. Step 4: Simplify right side
    21,144.24x = 341,727,816.96
  5. Step 5: Solve for x
    x = 341,727,816.96/21,144.24
  6. Step 6: Final answer
    x = 16,161.75

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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.