Home / 10,969.87-15,138.33-6,189.85

Finding the Fourth Proportional to 10,969.87, 15,138.33 and 6,189.85

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Solution

The fourth proportional to 10,969.87, 15,138.33 and 6,189.85 is: 8,541.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,969.87 : 15,138.33 = 6,189.85 : x
  2. Step 2: Convert to fraction form
    10,969.87/15,138.33 = 6,189.85/x
  3. Step 3: Cross multiply
    10,969.87x = 15,138.33 × 6,189.85
  4. Step 4: Simplify right side
    10,969.87x = 93,703,976.48
  5. Step 5: Solve for x
    x = 93,703,976.48/10,969.87
  6. Step 6: Final answer
    x = 8,541.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.