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Finding the Fourth Proportional to 18,143.61, 27,216.12 and 4,997.01

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Solution

The fourth proportional to 18,143.61, 27,216.12 and 4,997.01 is: 7,495.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.61 : 27,216.12 = 4,997.01 : x
  2. Step 2: Convert to fraction form
    18,143.61/27,216.12 = 4,997.01/x
  3. Step 3: Cross multiply
    18,143.61x = 27,216.12 × 4,997.01
  4. Step 4: Simplify right side
    18,143.61x = 135,999,223.80
  5. Step 5: Solve for x
    x = 135,999,223.80/18,143.61
  6. Step 6: Final answer
    x = 7,495.71

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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.