Home / 9,135.28-13,663.33-5,378.11

Finding the Fourth Proportional to 9,135.28, 13,663.33 and 5,378.11

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Solution

The fourth proportional to 9,135.28, 13,663.33 and 5,378.11 is: 8,043.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.28 : 13,663.33 = 5,378.11 : x
  2. Step 2: Convert to fraction form
    9,135.28/13,663.33 = 5,378.11/x
  3. Step 3: Cross multiply
    9,135.28x = 13,663.33 × 5,378.11
  4. Step 4: Simplify right side
    9,135.28x = 73,482,893.57
  5. Step 5: Solve for x
    x = 73,482,893.57/9,135.28
  6. Step 6: Final answer
    x = 8,043.86

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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.