Home / 21,451.40-32,181.90-8,302.60

Finding the Fourth Proportional to 21,451.40, 32,181.90 and 8,302.60

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Solution

The fourth proportional to 21,451.40, 32,181.90 and 8,302.60 is: 12,455.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451.40 : 32,181.90 = 8,302.60 : x
  2. Step 2: Convert to fraction form
    21,451.40/32,181.90 = 8,302.60/x
  3. Step 3: Cross multiply
    21,451.40x = 32,181.90 × 8,302.60
  4. Step 4: Simplify right side
    21,451.40x = 267,193,442.94
  5. Step 5: Solve for x
    x = 267,193,442.94/21,451.40
  6. Step 6: Final answer
    x = 12,455.76

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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.