Home / 21,494.16-32,221.78-7,639.92

Finding the Fourth Proportional to 21,494.16, 32,221.78 and 7,639.92

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Solution

The fourth proportional to 21,494.16, 32,221.78 and 7,639.92 is: 11,452.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,494.16 : 32,221.78 = 7,639.92 : x
  2. Step 2: Convert to fraction form
    21,494.16/32,221.78 = 7,639.92/x
  3. Step 3: Cross multiply
    21,494.16x = 32,221.78 × 7,639.92
  4. Step 4: Simplify right side
    21,494.16x = 246,171,821.46
  5. Step 5: Solve for x
    x = 246,171,821.46/21,494.16
  6. Step 6: Final answer
    x = 11,452.96

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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.