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Finding the Fourth Proportional to 21,659.91, 32,491.04 and 6,867.75

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Solution

The fourth proportional to 21,659.91, 32,491.04 and 6,867.75 is: 10,302.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,659.91 : 32,491.04 = 6,867.75 : x
  2. Step 2: Convert to fraction form
    21,659.91/32,491.04 = 6,867.75/x
  3. Step 3: Cross multiply
    21,659.91x = 32,491.04 × 6,867.75
  4. Step 4: Simplify right side
    21,659.91x = 223,140,339.96
  5. Step 5: Solve for x
    x = 223,140,339.96/21,659.91
  6. Step 6: Final answer
    x = 10,302.00

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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.