Home / 38,110.75-52,587.58-21,110.78

Finding the Fourth Proportional to 38,110.75, 52,587.58 and 21,110.78

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Solution

The fourth proportional to 38,110.75, 52,587.58 and 21,110.78 is: 29,129.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,110.75 : 52,587.58 = 21,110.78 : x
  2. Step 2: Convert to fraction form
    38,110.75/52,587.58 = 21,110.78/x
  3. Step 3: Cross multiply
    38,110.75x = 52,587.58 × 21,110.78
  4. Step 4: Simplify right side
    38,110.75x = 1,110,164,832.11
  5. Step 5: Solve for x
    x = 1,110,164,832.11/38,110.75
  6. Step 6: Final answer
    x = 29,129.97

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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.