Home / 25,721.82-35,486.30-15,646.43

Finding the Fourth Proportional to 25,721.82, 35,486.30 and 15,646.43

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Solution

The fourth proportional to 25,721.82, 35,486.30 and 15,646.43 is: 21,586.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,721.82 : 35,486.30 = 15,646.43 : x
  2. Step 2: Convert to fraction form
    25,721.82/35,486.30 = 15,646.43/x
  3. Step 3: Cross multiply
    25,721.82x = 35,486.30 × 15,646.43
  4. Step 4: Simplify right side
    25,721.82x = 555,234,036.74
  5. Step 5: Solve for x
    x = 555,234,036.74/25,721.82
  6. Step 6: Final answer
    x = 21,586.11

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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.