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Finding the Fourth Proportional to 11,080.80, 15,260.40 and 10,838.88

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Solution

The fourth proportional to 11,080.80, 15,260.40 and 10,838.88 is: 14,927.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,080.80 : 15,260.40 = 10,838.88 : x
  2. Step 2: Convert to fraction form
    11,080.80/15,260.40 = 10,838.88/x
  3. Step 3: Cross multiply
    11,080.80x = 15,260.40 × 10,838.88
  4. Step 4: Simplify right side
    11,080.80x = 165,405,644.35
  5. Step 5: Solve for x
    x = 165,405,644.35/11,080.80
  6. Step 6: Final answer
    x = 14,927.23

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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.