Home / 39,813.36-54,943.74-21,909.66

Finding the Fourth Proportional to 39,813.36, 54,943.74 and 21,909.66

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Solution

The fourth proportional to 39,813.36, 54,943.74 and 21,909.66 is: 30,236.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,813.36 : 54,943.74 = 21,909.66 : x
  2. Step 2: Convert to fraction form
    39,813.36/54,943.74 = 21,909.66/x
  3. Step 3: Cross multiply
    39,813.36x = 54,943.74 × 21,909.66
  4. Step 4: Simplify right side
    39,813.36x = 1,203,798,662.53
  5. Step 5: Solve for x
    x = 1,203,798,662.53/39,813.36
  6. Step 6: Final answer
    x = 30,236.05

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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.