Home / 39,589.91-54,634.09-21,685.21

Finding the Fourth Proportional to 39,589.91, 54,634.09 and 21,685.21

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Solution

The fourth proportional to 39,589.91, 54,634.09 and 21,685.21 is: 29,925.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,589.91 : 54,634.09 = 21,685.21 : x
  2. Step 2: Convert to fraction form
    39,589.91/54,634.09 = 21,685.21/x
  3. Step 3: Cross multiply
    39,589.91x = 54,634.09 × 21,685.21
  4. Step 4: Simplify right side
    39,589.91x = 1,184,751,769.02
  5. Step 5: Solve for x
    x = 1,184,751,769.02/39,589.91
  6. Step 6: Final answer
    x = 29,925.60

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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.