Home / 21,335.88-29,446.50-15,387.24

Finding the Fourth Proportional to 21,335.88, 29,446.50 and 15,387.24

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Solution

The fourth proportional to 21,335.88, 29,446.50 and 15,387.24 is: 21,236.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.88 : 29,446.50 = 15,387.24 : x
  2. Step 2: Convert to fraction form
    21,335.88/29,446.50 = 15,387.24/x
  3. Step 3: Cross multiply
    21,335.88x = 29,446.50 × 15,387.24
  4. Step 4: Simplify right side
    21,335.88x = 453,100,362.66
  5. Step 5: Solve for x
    x = 453,100,362.66/21,335.88
  6. Step 6: Final answer
    x = 21,236.54

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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.