Home / 13,699.81-20,550.12-5,381.92

Finding the Fourth Proportional to 13,699.81, 20,550.12 and 5,381.92

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Solution

The fourth proportional to 13,699.81, 20,550.12 and 5,381.92 is: 8,073.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.81 : 20,550.12 = 5,381.92 : x
  2. Step 2: Convert to fraction form
    13,699.81/20,550.12 = 5,381.92/x
  3. Step 3: Cross multiply
    13,699.81x = 20,550.12 × 5,381.92
  4. Step 4: Simplify right side
    13,699.81x = 110,598,972.17
  5. Step 5: Solve for x
    x = 110,598,972.17/13,699.81
  6. Step 6: Final answer
    x = 8,073.03

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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.