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Finding the Fourth Proportional to 30,291.86, 41,803.34 and 16,863.68

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Solution

The fourth proportional to 30,291.86, 41,803.34 and 16,863.68 is: 23,272.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,291.86 : 41,803.34 = 16,863.68 : x
  2. Step 2: Convert to fraction form
    30,291.86/41,803.34 = 16,863.68/x
  3. Step 3: Cross multiply
    30,291.86x = 41,803.34 × 16,863.68
  4. Step 4: Simplify right side
    30,291.86x = 704,957,855.36
  5. Step 5: Solve for x
    x = 704,957,855.36/30,291.86
  6. Step 6: Final answer
    x = 23,272.19

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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.