Home / 19,778.64-27,285.84-11,816.88

Finding the Fourth Proportional to 19,778.64, 27,285.84 and 11,816.88

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Solution

The fourth proportional to 19,778.64, 27,285.84 and 11,816.88 is: 16,302.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,778.64 : 27,285.84 = 11,816.88 : x
  2. Step 2: Convert to fraction form
    19,778.64/27,285.84 = 11,816.88/x
  3. Step 3: Cross multiply
    19,778.64x = 27,285.84 × 11,816.88
  4. Step 4: Simplify right side
    19,778.64x = 322,433,496.98
  5. Step 5: Solve for x
    x = 322,433,496.98/19,778.64
  6. Step 6: Final answer
    x = 16,302.11

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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.