Home / 38,191.12-52,703.78-21,195.61

Finding the Fourth Proportional to 38,191.12, 52,703.78 and 21,195.61

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Solution

The fourth proportional to 38,191.12, 52,703.78 and 21,195.61 is: 29,249.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,191.12 : 52,703.78 = 21,195.61 : x
  2. Step 2: Convert to fraction form
    38,191.12/52,703.78 = 21,195.61/x
  3. Step 3: Cross multiply
    38,191.12x = 52,703.78 × 21,195.61
  4. Step 4: Simplify right side
    38,191.12x = 1,117,088,528.67
  5. Step 5: Solve for x
    x = 1,117,088,528.67/38,191.12
  6. Step 6: Final answer
    x = 29,249.96

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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.