Home / 9,921.14-13,691.88-6,558.12

Finding the Fourth Proportional to 9,921.14, 13,691.88 and 6,558.12

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Solution

The fourth proportional to 9,921.14, 13,691.88 and 6,558.12 is: 9,050.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.14 : 13,691.88 = 6,558.12 : x
  2. Step 2: Convert to fraction form
    9,921.14/13,691.88 = 6,558.12/x
  3. Step 3: Cross multiply
    9,921.14x = 13,691.88 × 6,558.12
  4. Step 4: Simplify right side
    9,921.14x = 89,792,992.07
  5. Step 5: Solve for x
    x = 89,792,992.07/9,921.14
  6. Step 6: Final answer
    x = 9,050.68

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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.