Home / 11,378.20-15,701.88-6,661.54

Finding the Fourth Proportional to 11,378.20, 15,701.88 and 6,661.54

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Solution

The fourth proportional to 11,378.20, 15,701.88 and 6,661.54 is: 9,192.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,378.20 : 15,701.88 = 6,661.54 : x
  2. Step 2: Convert to fraction form
    11,378.20/15,701.88 = 6,661.54/x
  3. Step 3: Cross multiply
    11,378.20x = 15,701.88 × 6,661.54
  4. Step 4: Simplify right side
    11,378.20x = 104,598,701.70
  5. Step 5: Solve for x
    x = 104,598,701.70/11,378.20
  6. Step 6: Final answer
    x = 9,192.90

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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.