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Finding the Fourth Proportional to 39,833.69, 54,970.02 and 21,928.32

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Solution

The fourth proportional to 39,833.69, 54,970.02 and 21,928.32 is: 30,260.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,833.69 : 54,970.02 = 21,928.32 : x
  2. Step 2: Convert to fraction form
    39,833.69/54,970.02 = 21,928.32/x
  3. Step 3: Cross multiply
    39,833.69x = 54,970.02 × 21,928.32
  4. Step 4: Simplify right side
    39,833.69x = 1,205,400,188.97
  5. Step 5: Solve for x
    x = 1,205,400,188.97/39,833.69
  6. Step 6: Final answer
    x = 30,260.83

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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.