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Finding the Fourth Proportional to 21,653.48, 32,479.20 and 6,863.24

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Solution

The fourth proportional to 21,653.48, 32,479.20 and 6,863.24 is: 10,294.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,653.48 : 32,479.20 = 6,863.24 : x
  2. Step 2: Convert to fraction form
    21,653.48/32,479.20 = 6,863.24/x
  3. Step 3: Cross multiply
    21,653.48x = 32,479.20 × 6,863.24
  4. Step 4: Simplify right side
    21,653.48x = 222,912,544.61
  5. Step 5: Solve for x
    x = 222,912,544.61/21,653.48
  6. Step 6: Final answer
    x = 10,294.54

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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.