Home / 21,288.24-29,375.06-12,335.66

Finding the Fourth Proportional to 21,288.24, 29,375.06 and 12,335.66

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Solution

The fourth proportional to 21,288.24, 29,375.06 and 12,335.66 is: 17,021.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.24 : 29,375.06 = 12,335.66 : x
  2. Step 2: Convert to fraction form
    21,288.24/29,375.06 = 12,335.66/x
  3. Step 3: Cross multiply
    21,288.24x = 29,375.06 × 12,335.66
  4. Step 4: Simplify right side
    21,288.24x = 362,360,752.64
  5. Step 5: Solve for x
    x = 362,360,752.64/21,288.24
  6. Step 6: Final answer
    x = 17,021.64

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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.