Home / 39,355.88-54,312.18-21,449.84

Finding the Fourth Proportional to 39,355.88, 54,312.18 and 21,449.84

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Solution

The fourth proportional to 39,355.88, 54,312.18 and 21,449.84 is: 29,601.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,355.88 : 54,312.18 = 21,449.84 : x
  2. Step 2: Convert to fraction form
    39,355.88/54,312.18 = 21,449.84/x
  3. Step 3: Cross multiply
    39,355.88x = 54,312.18 × 21,449.84
  4. Step 4: Simplify right side
    39,355.88x = 1,164,987,571.05
  5. Step 5: Solve for x
    x = 1,164,987,571.05/39,355.88
  6. Step 6: Final answer
    x = 29,601.36

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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.