Home / 38,111.75-52,588.95-21,111.78

Finding the Fourth Proportional to 38,111.75, 52,588.95 and 21,111.78

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Solution

The fourth proportional to 38,111.75, 52,588.95 and 21,111.78 is: 29,131.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,111.75 : 52,588.95 = 21,111.78 : x
  2. Step 2: Convert to fraction form
    38,111.75/52,588.95 = 21,111.78/x
  3. Step 3: Cross multiply
    38,111.75x = 52,588.95 × 21,111.78
  4. Step 4: Simplify right side
    38,111.75x = 1,110,246,342.83
  5. Step 5: Solve for x
    x = 1,110,246,342.83/38,111.75
  6. Step 6: Final answer
    x = 29,131.34

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Half scale
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Double scale
Find fourth proportional to 38,112.75, 52,590.33 and 21,112.78
Similar ratio
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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.