Home / 10,889.58-15,022.32-6,690.54

Finding the Fourth Proportional to 10,889.58, 15,022.32 and 6,690.54

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Solution

The fourth proportional to 10,889.58, 15,022.32 and 6,690.54 is: 9,229.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,889.58 : 15,022.32 = 6,690.54 : x
  2. Step 2: Convert to fraction form
    10,889.58/15,022.32 = 6,690.54/x
  3. Step 3: Cross multiply
    10,889.58x = 15,022.32 × 6,690.54
  4. Step 4: Simplify right side
    10,889.58x = 100,507,432.85
  5. Step 5: Solve for x
    x = 100,507,432.85/10,889.58
  6. Step 6: Final answer
    x = 9,229.69

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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.