Home / 21,432.88-32,127.30-8,960.20

Finding the Fourth Proportional to 21,432.88, 32,127.30 and 8,960.20

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Solution

The fourth proportional to 21,432.88, 32,127.30 and 8,960.20 is: 13,431.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,432.88 : 32,127.30 = 8,960.20 : x
  2. Step 2: Convert to fraction form
    21,432.88/32,127.30 = 8,960.20/x
  3. Step 3: Cross multiply
    21,432.88x = 32,127.30 × 8,960.20
  4. Step 4: Simplify right side
    21,432.88x = 287,867,033.46
  5. Step 5: Solve for x
    x = 287,867,033.46/21,432.88
  6. Step 6: Final answer
    x = 13,431.09

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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.