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Finding the Fourth Proportional to 9,331.30, 13,081.10 and 9,331.30

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Solution

The fourth proportional to 9,331.30, 13,081.10 and 9,331.30 is: 13,081.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,331.30 : 13,081.10 = 9,331.30 : x
  2. Step 2: Convert to fraction form
    9,331.30/13,081.10 = 9,331.30/x
  3. Step 3: Cross multiply
    9,331.30x = 13,081.10 × 9,331.30
  4. Step 4: Simplify right side
    9,331.30x = 122,063,668.43
  5. Step 5: Solve for x
    x = 122,063,668.43/9,331.30
  6. Step 6: Final answer
    x = 13,081.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.