Home / 13,505.42-20,220.00-7,165.96

Finding the Fourth Proportional to 13,505.42, 20,220.00 and 7,165.96

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Solution

The fourth proportional to 13,505.42, 20,220.00 and 7,165.96 is: 10,728.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,505.42 : 20,220.00 = 7,165.96 : x
  2. Step 2: Convert to fraction form
    13,505.42/20,220.00 = 7,165.96/x
  3. Step 3: Cross multiply
    13,505.42x = 20,220.00 × 7,165.96
  4. Step 4: Simplify right side
    13,505.42x = 144,895,633.78
  5. Step 5: Solve for x
    x = 144,895,633.78/13,505.42
  6. Step 6: Final answer
    x = 10,728.70

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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.