Home / 15,912.96-21,960.30-8,840.04

Finding the Fourth Proportional to 15,912.96, 21,960.30 and 8,840.04

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Solution

The fourth proportional to 15,912.96, 21,960.30 and 8,840.04 is: 12,199.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,912.96 : 21,960.30 = 8,840.04 : x
  2. Step 2: Convert to fraction form
    15,912.96/21,960.30 = 8,840.04/x
  3. Step 3: Cross multiply
    15,912.96x = 21,960.30 × 8,840.04
  4. Step 4: Simplify right side
    15,912.96x = 194,129,930.41
  5. Step 5: Solve for x
    x = 194,129,930.41/15,912.96
  6. Step 6: Final answer
    x = 12,199.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.