Home / 38,108.19-52,589.67-21,112.79

Finding the Fourth Proportional to 38,108.19, 52,589.67 and 21,112.79

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Solution

The fourth proportional to 38,108.19, 52,589.67 and 21,112.79 is: 29,135.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,108.19 : 52,589.67 = 21,112.79 : x
  2. Step 2: Convert to fraction form
    38,108.19/52,589.67 = 21,112.79/x
  3. Step 3: Cross multiply
    38,108.19x = 52,589.67 × 21,112.79
  4. Step 4: Simplify right side
    38,108.19x = 1,110,314,658.88
  5. Step 5: Solve for x
    x = 1,110,314,658.88/38,108.19
  6. Step 6: Final answer
    x = 29,135.85

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Double scale
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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.