Home / 28,757.43-39,682.46-21,207.82

Finding the Fourth Proportional to 28,757.43, 39,682.46 and 21,207.82

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Solution

The fourth proportional to 28,757.43, 39,682.46 and 21,207.82 is: 29,264.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,757.43 : 39,682.46 = 21,207.82 : x
  2. Step 2: Convert to fraction form
    28,757.43/39,682.46 = 21,207.82/x
  3. Step 3: Cross multiply
    28,757.43x = 39,682.46 × 21,207.82
  4. Step 4: Simplify right side
    28,757.43x = 841,578,468.84
  5. Step 5: Solve for x
    x = 841,578,468.84/28,757.43
  6. Step 6: Final answer
    x = 29,264.73

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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.