Home / 19,838.64-27,378.18-11,879.34

Finding the Fourth Proportional to 19,838.64, 27,378.18 and 11,879.34

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Solution

The fourth proportional to 19,838.64, 27,378.18 and 11,879.34 is: 16,394.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,838.64 : 27,378.18 = 11,879.34 : x
  2. Step 2: Convert to fraction form
    19,838.64/27,378.18 = 11,879.34/x
  3. Step 3: Cross multiply
    19,838.64x = 27,378.18 × 11,879.34
  4. Step 4: Simplify right side
    19,838.64x = 325,234,708.80
  5. Step 5: Solve for x
    x = 325,234,708.80/19,838.64
  6. Step 6: Final answer
    x = 16,394.00

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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.