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Finding the Fourth Proportional to 21,230.44, 31,848.54 and 7,377.64

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Solution

The fourth proportional to 21,230.44, 31,848.54 and 7,377.64 is: 11,067.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.44 : 31,848.54 = 7,377.64 : x
  2. Step 2: Convert to fraction form
    21,230.44/31,848.54 = 7,377.64/x
  3. Step 3: Cross multiply
    21,230.44x = 31,848.54 × 7,377.64
  4. Step 4: Simplify right side
    21,230.44x = 234,967,062.65
  5. Step 5: Solve for x
    x = 234,967,062.65/21,230.44
  6. Step 6: Final answer
    x = 11,067.46

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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.