Home / 38,928.54-53,721.39-21,023.55

Finding the Fourth Proportional to 38,928.54, 53,721.39 and 21,023.55

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Solution

The fourth proportional to 38,928.54, 53,721.39 and 21,023.55 is: 29,012.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,928.54 : 53,721.39 = 21,023.55 : x
  2. Step 2: Convert to fraction form
    38,928.54/53,721.39 = 21,023.55/x
  3. Step 3: Cross multiply
    38,928.54x = 53,721.39 × 21,023.55
  4. Step 4: Simplify right side
    38,928.54x = 1,129,414,141.87
  5. Step 5: Solve for x
    x = 1,129,414,141.87/38,928.54
  6. Step 6: Final answer
    x = 29,012.50

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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.