Home / 18,511.56-27,765.54-10,080.78

Finding the Fourth Proportional to 18,511.56, 27,765.54 and 10,080.78

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Solution

The fourth proportional to 18,511.56, 27,765.54 and 10,080.78 is: 15,120.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,511.56 : 27,765.54 = 10,080.78 : x
  2. Step 2: Convert to fraction form
    18,511.56/27,765.54 = 10,080.78/x
  3. Step 3: Cross multiply
    18,511.56x = 27,765.54 × 10,080.78
  4. Step 4: Simplify right side
    18,511.56x = 279,898,300.32
  5. Step 5: Solve for x
    x = 279,898,300.32/18,511.56
  6. Step 6: Final answer
    x = 15,120.19

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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.