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Finding the Fourth Proportional to 18,109.63, 27,158.92 and 12,523.22

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Solution

The fourth proportional to 18,109.63, 27,158.92 and 12,523.22 is: 18,781.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,109.63 : 27,158.92 = 12,523.22 : x
  2. Step 2: Convert to fraction form
    18,109.63/27,158.92 = 12,523.22/x
  3. Step 3: Cross multiply
    18,109.63x = 27,158.92 × 12,523.22
  4. Step 4: Simplify right side
    18,109.63x = 340,117,130.12
  5. Step 5: Solve for x
    x = 340,117,130.12/18,109.63
  6. Step 6: Final answer
    x = 18,781.01

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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.