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Finding the Fourth Proportional to 21,761.68, 32,641.72 and 6,179.16

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Solution

The fourth proportional to 21,761.68, 32,641.72 and 6,179.16 is: 9,268.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,761.68 : 32,641.72 = 6,179.16 : x
  2. Step 2: Convert to fraction form
    21,761.68/32,641.72 = 6,179.16/x
  3. Step 3: Cross multiply
    21,761.68x = 32,641.72 × 6,179.16
  4. Step 4: Simplify right side
    21,761.68x = 201,698,410.56
  5. Step 5: Solve for x
    x = 201,698,410.56/21,761.68
  6. Step 6: Final answer
    x = 9,268.51

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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.