Home / 13,296.64-19,891.20-11,109.76

Finding the Fourth Proportional to 13,296.64, 19,891.20 and 11,109.76

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Solution

The fourth proportional to 13,296.64, 19,891.20 and 11,109.76 is: 16,619.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,296.64 : 19,891.20 = 11,109.76 : x
  2. Step 2: Convert to fraction form
    13,296.64/19,891.20 = 11,109.76/x
  3. Step 3: Cross multiply
    13,296.64x = 19,891.20 × 11,109.76
  4. Step 4: Simplify right side
    13,296.64x = 220,986,458.11
  5. Step 5: Solve for x
    x = 220,986,458.11/13,296.64
  6. Step 6: Final answer
    x = 16,619.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.