Home / 9,163.80-12,646.68-6,921.72

Finding the Fourth Proportional to 9,163.80, 12,646.68 and 6,921.72

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Solution

The fourth proportional to 9,163.80, 12,646.68 and 6,921.72 is: 9,552.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,163.80 : 12,646.68 = 6,921.72 : x
  2. Step 2: Convert to fraction form
    9,163.80/12,646.68 = 6,921.72/x
  3. Step 3: Cross multiply
    9,163.80x = 12,646.68 × 6,921.72
  4. Step 4: Simplify right side
    9,163.80x = 87,536,777.89
  5. Step 5: Solve for x
    x = 87,536,777.89/9,163.80
  6. Step 6: Final answer
    x = 9,552.45

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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.