Home / 38,928.89-53,710.76-21,927.20

Finding the Fourth Proportional to 38,928.89, 53,710.76 and 21,927.20

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Solution

The fourth proportional to 38,928.89, 53,710.76 and 21,927.20 is: 30,253.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,928.89 : 53,710.76 = 21,927.20 : x
  2. Step 2: Convert to fraction form
    38,928.89/53,710.76 = 21,927.20/x
  3. Step 3: Cross multiply
    38,928.89x = 53,710.76 × 21,927.20
  4. Step 4: Simplify right side
    38,928.89x = 1,177,726,362.94
  5. Step 5: Solve for x
    x = 1,177,726,362.94/38,928.89
  6. Step 6: Final answer
    x = 30,253.27

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Similar ratio
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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.