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Finding the Fourth Proportional to 9,335.80, 13,109 and 9,335.80

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Solution

The fourth proportional to 9,335.80, 13,109 and 9,335.80 is: 13,109

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,335.80 : 13,109 = 9,335.80 : x
  2. Step 2: Convert to fraction form
    9,335.80/13,109 = 9,335.80/x
  3. Step 3: Cross multiply
    9,335.80x = 13,109 × 9,335.80
  4. Step 4: Simplify right side
    9,335.80x = 122,383,002.20
  5. Step 5: Solve for x
    x = 122,383,002.20/9,335.80
  6. Step 6: Final answer
    x = 13,109

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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.