Home / 39,691.66-54,771.61-21,783.78

Finding the Fourth Proportional to 39,691.66, 54,771.61 and 21,783.78

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Solution

The fourth proportional to 39,691.66, 54,771.61 and 21,783.78 is: 30,060.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,691.66 : 54,771.61 = 21,783.78 : x
  2. Step 2: Convert to fraction form
    39,691.66/54,771.61 = 21,783.78/x
  3. Step 3: Cross multiply
    39,691.66x = 54,771.61 × 21,783.78
  4. Step 4: Simplify right side
    39,691.66x = 1,193,132,702.49
  5. Step 5: Solve for x
    x = 1,193,132,702.49/39,691.66
  6. Step 6: Final answer
    x = 30,060.04

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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.