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Finding the Fourth Proportional to 13,165.69, 18,203.65 and 11,504.94

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Solution

The fourth proportional to 13,165.69, 18,203.65 and 11,504.94 is: 15,907.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165.69 : 18,203.65 = 11,504.94 : x
  2. Step 2: Convert to fraction form
    13,165.69/18,203.65 = 11,504.94/x
  3. Step 3: Cross multiply
    13,165.69x = 18,203.65 × 11,504.94
  4. Step 4: Simplify right side
    13,165.69x = 209,431,901.03
  5. Step 5: Solve for x
    x = 209,431,901.03/13,165.69
  6. Step 6: Final answer
    x = 15,907.40

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Double scale
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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.