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Finding the Fourth Proportional to 18,005.19, 27,017.51 and 8,771.19

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Solution

The fourth proportional to 18,005.19, 27,017.51 and 8,771.19 is: 13,161.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,005.19 : 27,017.51 = 8,771.19 : x
  2. Step 2: Convert to fraction form
    18,005.19/27,017.51 = 8,771.19/x
  3. Step 3: Cross multiply
    18,005.19x = 27,017.51 × 8,771.19
  4. Step 4: Simplify right side
    18,005.19x = 236,975,669.68
  5. Step 5: Solve for x
    x = 236,975,669.68/18,005.19
  6. Step 6: Final answer
    x = 13,161.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.