Home / 15,923.12-21,964.84-9,947.48

Finding the Fourth Proportional to 15,923.12, 21,964.84 and 9,947.48

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Solution

The fourth proportional to 15,923.12, 21,964.84 and 9,947.48 is: 13,721.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,923.12 : 21,964.84 = 9,947.48 : x
  2. Step 2: Convert to fraction form
    15,923.12/21,964.84 = 9,947.48/x
  3. Step 3: Cross multiply
    15,923.12x = 21,964.84 × 9,947.48
  4. Step 4: Simplify right side
    15,923.12x = 218,494,806.60
  5. Step 5: Solve for x
    x = 218,494,806.60/15,923.12
  6. Step 6: Final answer
    x = 13,721.86

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Double scale
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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.