Home / 13,912.30-20,864.29-7,334.90

Finding the Fourth Proportional to 13,912.30, 20,864.29 and 7,334.90

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Solution

The fourth proportional to 13,912.30, 20,864.29 and 7,334.90 is: 11,000.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.30 : 20,864.29 = 7,334.90 : x
  2. Step 2: Convert to fraction form
    13,912.30/20,864.29 = 7,334.90/x
  3. Step 3: Cross multiply
    13,912.30x = 20,864.29 × 7,334.90
  4. Step 4: Simplify right side
    13,912.30x = 153,037,480.72
  5. Step 5: Solve for x
    x = 153,037,480.72/13,912.30
  6. Step 6: Final answer
    x = 11,000.16

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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.