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Finding the Fourth Proportional to 38,871.78, 58,297.95 and 11,169.78

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Solution

The fourth proportional to 38,871.78, 58,297.95 and 11,169.78 is: 16,751.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,871.78 : 58,297.95 = 11,169.78 : x
  2. Step 2: Convert to fraction form
    38,871.78/58,297.95 = 11,169.78/x
  3. Step 3: Cross multiply
    38,871.78x = 58,297.95 × 11,169.78
  4. Step 4: Simplify right side
    38,871.78x = 651,175,275.95
  5. Step 5: Solve for x
    x = 651,175,275.95/38,871.78
  6. Step 6: Final answer
    x = 16,751.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.