Home / 21,455.20-32,194.95-8,308.50

Finding the Fourth Proportional to 21,455.20, 32,194.95 and 8,308.50

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Solution

The fourth proportional to 21,455.20, 32,194.95 and 8,308.50 is: 12,467.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,455.20 : 32,194.95 = 8,308.50 : x
  2. Step 2: Convert to fraction form
    21,455.20/32,194.95 = 8,308.50/x
  3. Step 3: Cross multiply
    21,455.20x = 32,194.95 × 8,308.50
  4. Step 4: Simplify right side
    21,455.20x = 267,491,742.08
  5. Step 5: Solve for x
    x = 267,491,742.08/21,455.20
  6. Step 6: Final answer
    x = 12,467.46

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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.