Home / 39,824.53-54,957.86-21,919.40

Finding the Fourth Proportional to 39,824.53, 54,957.86 and 21,919.40

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Solution

The fourth proportional to 39,824.53, 54,957.86 and 21,919.40 is: 30,248.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,824.53 : 54,957.86 = 21,919.40 : x
  2. Step 2: Convert to fraction form
    39,824.53/54,957.86 = 21,919.40/x
  3. Step 3: Cross multiply
    39,824.53x = 54,957.86 × 21,919.40
  4. Step 4: Simplify right side
    39,824.53x = 1,204,643,591.17
  5. Step 5: Solve for x
    x = 1,204,643,591.17/39,824.53
  6. Step 6: Final answer
    x = 30,248.79

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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.