Home / 39,833.78-54,970.88-21,928.32

Finding the Fourth Proportional to 39,833.78, 54,970.88 and 21,928.32

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Solution

The fourth proportional to 39,833.78, 54,970.88 and 21,928.32 is: 30,261.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,833.78 : 54,970.88 = 21,928.32 : x
  2. Step 2: Convert to fraction form
    39,833.78/54,970.88 = 21,928.32/x
  3. Step 3: Cross multiply
    39,833.78x = 54,970.88 × 21,928.32
  4. Step 4: Simplify right side
    39,833.78x = 1,205,418,937.68
  5. Step 5: Solve for x
    x = 1,205,418,937.68/39,833.78
  6. Step 6: Final answer
    x = 30,261.23

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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.