Home / 39,387.42-54,365.88-22,400.82

Finding the Fourth Proportional to 39,387.42, 54,365.88 and 22,400.82

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Solution

The fourth proportional to 39,387.42, 54,365.88 and 22,400.82 is: 30,919.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,387.42 : 54,365.88 = 22,400.82 : x
  2. Step 2: Convert to fraction form
    39,387.42/54,365.88 = 22,400.82/x
  3. Step 3: Cross multiply
    39,387.42x = 54,365.88 × 22,400.82
  4. Step 4: Simplify right side
    39,387.42x = 1,217,840,292.02
  5. Step 5: Solve for x
    x = 1,217,840,292.02/39,387.42
  6. Step 6: Final answer
    x = 30,919.52

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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.