Home / 19,840.74-29,761.56-7,995.72

Finding the Fourth Proportional to 19,840.74, 29,761.56 and 7,995.72

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Solution

The fourth proportional to 19,840.74, 29,761.56 and 7,995.72 is: 11,993.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,840.74 : 29,761.56 = 7,995.72 : x
  2. Step 2: Convert to fraction form
    19,840.74/29,761.56 = 7,995.72/x
  3. Step 3: Cross multiply
    19,840.74x = 29,761.56 × 7,995.72
  4. Step 4: Simplify right side
    19,840.74x = 237,965,100.52
  5. Step 5: Solve for x
    x = 237,965,100.52/19,840.74
  6. Step 6: Final answer
    x = 11,993.76

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.