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Finding the Fourth Proportional to 19,763.64, 27,273.84 and 10,811.12

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Solution

The fourth proportional to 19,763.64, 27,273.84 and 10,811.12 is: 14,919.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,763.64 : 27,273.84 = 10,811.12 : x
  2. Step 2: Convert to fraction form
    19,763.64/27,273.84 = 10,811.12/x
  3. Step 3: Cross multiply
    19,763.64x = 27,273.84 × 10,811.12
  4. Step 4: Simplify right side
    19,763.64x = 294,860,757.10
  5. Step 5: Solve for x
    x = 294,860,757.10/19,763.64
  6. Step 6: Final answer
    x = 14,919.35

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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.