Home / 21,147.88-29,182.18-11,713.96

Finding the Fourth Proportional to 21,147.88, 29,182.18 and 11,713.96

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Solution

The fourth proportional to 21,147.88, 29,182.18 and 11,713.96 is: 16,164.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,147.88 : 29,182.18 = 11,713.96 : x
  2. Step 2: Convert to fraction form
    21,147.88/29,182.18 = 11,713.96/x
  3. Step 3: Cross multiply
    21,147.88x = 29,182.18 × 11,713.96
  4. Step 4: Simplify right side
    21,147.88x = 341,838,889.23
  5. Step 5: Solve for x
    x = 341,838,889.23/21,147.88
  6. Step 6: Final answer
    x = 16,164.22

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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.