Home / 29,878.33-41,215-18,680.89

Finding the Fourth Proportional to 29,878.33, 41,215 and 18,680.89

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Solution

The fourth proportional to 29,878.33, 41,215 and 18,680.89 is: 25,768.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,878.33 : 41,215 = 18,680.89 : x
  2. Step 2: Convert to fraction form
    29,878.33/41,215 = 18,680.89/x
  3. Step 3: Cross multiply
    29,878.33x = 41,215 × 18,680.89
  4. Step 4: Simplify right side
    29,878.33x = 769,932,881.35
  5. Step 5: Solve for x
    x = 769,932,881.35/29,878.33
  6. Step 6: Final answer
    x = 25,768.94

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1.5x scale

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.