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Finding the Fourth Proportional to 13,099.11, 18,081 and 9,740.85

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Solution

The fourth proportional to 13,099.11, 18,081 and 9,740.85 is: 13,445.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,099.11 : 18,081 = 9,740.85 : x
  2. Step 2: Convert to fraction form
    13,099.11/18,081 = 9,740.85/x
  3. Step 3: Cross multiply
    13,099.11x = 18,081 × 9,740.85
  4. Step 4: Simplify right side
    13,099.11x = 176,124,308.85
  5. Step 5: Solve for x
    x = 176,124,308.85/13,099.11
  6. Step 6: Final answer
    x = 13,445.52

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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.