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Finding the Fourth Proportional to 9,494.60, 13,081.10 and 6,620.58

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Solution

The fourth proportional to 9,494.60, 13,081.10 and 6,620.58 is: 9,121.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,494.60 : 13,081.10 = 6,620.58 : x
  2. Step 2: Convert to fraction form
    9,494.60/13,081.10 = 6,620.58/x
  3. Step 3: Cross multiply
    9,494.60x = 13,081.10 × 6,620.58
  4. Step 4: Simplify right side
    9,494.60x = 86,604,435.94
  5. Step 5: Solve for x
    x = 86,604,435.94/9,494.60
  6. Step 6: Final answer
    x = 9,121.45

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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.