Home / 39,793.19-54,914.88-21,643.91

Finding the Fourth Proportional to 39,793.19, 54,914.88 and 21,643.91

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Solution

The fourth proportional to 39,793.19, 54,914.88 and 21,643.91 is: 29,868.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,793.19 : 54,914.88 = 21,643.91 : x
  2. Step 2: Convert to fraction form
    39,793.19/54,914.88 = 21,643.91/x
  3. Step 3: Cross multiply
    39,793.19x = 54,914.88 × 21,643.91
  4. Step 4: Simplify right side
    39,793.19x = 1,188,572,720.38
  5. Step 5: Solve for x
    x = 1,188,572,720.38/39,793.19
  6. Step 6: Final answer
    x = 29,868.75

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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.