Home / 19,861.60-27,400.32-12,305.92

Finding the Fourth Proportional to 19,861.60, 27,400.32 and 12,305.92

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Solution

The fourth proportional to 19,861.60, 27,400.32 and 12,305.92 is: 16,976.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,861.60 : 27,400.32 = 12,305.92 : x
  2. Step 2: Convert to fraction form
    19,861.60/27,400.32 = 12,305.92/x
  3. Step 3: Cross multiply
    19,861.60x = 27,400.32 × 12,305.92
  4. Step 4: Simplify right side
    19,861.60x = 337,186,145.89
  5. Step 5: Solve for x
    x = 337,186,145.89/19,861.60
  6. Step 6: Final answer
    x = 16,976.79

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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.