Home / 11,415.20-15,749.28-6,700.64

Finding the Fourth Proportional to 11,415.20, 15,749.28 and 6,700.64

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Solution

The fourth proportional to 11,415.20, 15,749.28 and 6,700.64 is: 9,244.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,415.20 : 15,749.28 = 6,700.64 : x
  2. Step 2: Convert to fraction form
    11,415.20/15,749.28 = 6,700.64/x
  3. Step 3: Cross multiply
    11,415.20x = 15,749.28 × 6,700.64
  4. Step 4: Simplify right side
    11,415.20x = 105,530,255.54
  5. Step 5: Solve for x
    x = 105,530,255.54/11,415.20
  6. Step 6: Final answer
    x = 9,244.71

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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.