Home / 22,450.77-30,981.84-12,379.64

Finding the Fourth Proportional to 22,450.77, 30,981.84 and 12,379.64

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Solution

The fourth proportional to 22,450.77, 30,981.84 and 12,379.64 is: 17,083.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,450.77 : 30,981.84 = 12,379.64 : x
  2. Step 2: Convert to fraction form
    22,450.77/30,981.84 = 12,379.64/x
  3. Step 3: Cross multiply
    22,450.77x = 30,981.84 × 12,379.64
  4. Step 4: Simplify right side
    22,450.77x = 383,543,894.04
  5. Step 5: Solve for x
    x = 383,543,894.04/22,450.77
  6. Step 6: Final answer
    x = 17,083.77

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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.