Home / 9,756.64-13,455.21-6,520.78

Finding the Fourth Proportional to 9,756.64, 13,455.21 and 6,520.78

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Solution

The fourth proportional to 9,756.64, 13,455.21 and 6,520.78 is: 8,992.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,756.64 : 13,455.21 = 6,520.78 : x
  2. Step 2: Convert to fraction form
    9,756.64/13,455.21 = 6,520.78/x
  3. Step 3: Cross multiply
    9,756.64x = 13,455.21 × 6,520.78
  4. Step 4: Simplify right side
    9,756.64x = 87,738,464.26
  5. Step 5: Solve for x
    x = 87,738,464.26/9,756.64
  6. Step 6: Final answer
    x = 8,992.69

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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.