Home / 13,188.96-19,776.32-5,403.36

Finding the Fourth Proportional to 13,188.96, 19,776.32 and 5,403.36

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Solution

The fourth proportional to 13,188.96, 19,776.32 and 5,403.36 is: 8,102.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.96 : 19,776.32 = 5,403.36 : x
  2. Step 2: Convert to fraction form
    13,188.96/19,776.32 = 5,403.36/x
  3. Step 3: Cross multiply
    13,188.96x = 19,776.32 × 5,403.36
  4. Step 4: Simplify right side
    13,188.96x = 106,858,576.44
  5. Step 5: Solve for x
    x = 106,858,576.44/13,188.96
  6. Step 6: Final answer
    x = 8,102.12

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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.