Home / 30,874.11-46,322.25-12,143.78

Finding the Fourth Proportional to 30,874.11, 46,322.25 and 12,143.78

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Solution

The fourth proportional to 30,874.11, 46,322.25 and 12,143.78 is: 18,220.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,874.11 : 46,322.25 = 12,143.78 : x
  2. Step 2: Convert to fraction form
    30,874.11/46,322.25 = 12,143.78/x
  3. Step 3: Cross multiply
    30,874.11x = 46,322.25 × 12,143.78
  4. Step 4: Simplify right side
    30,874.11x = 562,526,981.49
  5. Step 5: Solve for x
    x = 562,526,981.49/30,874.11
  6. Step 6: Final answer
    x = 18,220.02

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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.