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Finding the Fourth Proportional to 13,167.09, 18,167.07 and 8,065.32

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Solution

The fourth proportional to 13,167.09, 18,167.07 and 8,065.32 is: 11,127.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,167.09 : 18,167.07 = 8,065.32 : x
  2. Step 2: Convert to fraction form
    13,167.09/18,167.07 = 8,065.32/x
  3. Step 3: Cross multiply
    13,167.09x = 18,167.07 × 8,065.32
  4. Step 4: Simplify right side
    13,167.09x = 146,523,233.01
  5. Step 5: Solve for x
    x = 146,523,233.01/13,167.09
  6. Step 6: Final answer
    x = 11,127.99

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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.