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Finding the Fourth Proportional to 31,486.66, 47,249.43 and 18,364.66

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Solution

The fourth proportional to 31,486.66, 47,249.43 and 18,364.66 is: 27,558.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,486.66 : 47,249.43 = 18,364.66 : x
  2. Step 2: Convert to fraction form
    31,486.66/47,249.43 = 18,364.66/x
  3. Step 3: Cross multiply
    31,486.66x = 47,249.43 × 18,364.66
  4. Step 4: Simplify right side
    31,486.66x = 867,719,717.14
  5. Step 5: Solve for x
    x = 867,719,717.14/31,486.66
  6. Step 6: Final answer
    x = 27,558.33

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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.