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Finding the Fourth Proportional to 18,101.85, 24,981.24 and 10,143.81

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Solution

The fourth proportional to 18,101.85, 24,981.24 and 10,143.81 is: 13,998.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,101.85 : 24,981.24 = 10,143.81 : x
  2. Step 2: Convert to fraction form
    18,101.85/24,981.24 = 10,143.81/x
  3. Step 3: Cross multiply
    18,101.85x = 24,981.24 × 10,143.81
  4. Step 4: Simplify right side
    18,101.85x = 253,404,952.12
  5. Step 5: Solve for x
    x = 253,404,952.12/18,101.85
  6. Step 6: Final answer
    x = 13,998.84

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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.