Home / 21,517.40-32,280.20-7,476.88

Finding the Fourth Proportional to 21,517.40, 32,280.20 and 7,476.88

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Solution

The fourth proportional to 21,517.40, 32,280.20 and 7,476.88 is: 11,216.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,517.40 : 32,280.20 = 7,476.88 : x
  2. Step 2: Convert to fraction form
    21,517.40/32,280.20 = 7,476.88/x
  3. Step 3: Cross multiply
    21,517.40x = 32,280.20 × 7,476.88
  4. Step 4: Simplify right side
    21,517.40x = 241,355,181.78
  5. Step 5: Solve for x
    x = 241,355,181.78/21,517.40
  6. Step 6: Final answer
    x = 11,216.74

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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.