Home / 10,120.88-15,115.78-10,054.64

Finding the Fourth Proportional to 10,120.88, 15,115.78 and 10,054.64

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Solution

The fourth proportional to 10,120.88, 15,115.78 and 10,054.64 is: 15,016.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.88 : 15,115.78 = 10,054.64 : x
  2. Step 2: Convert to fraction form
    10,120.88/15,115.78 = 10,054.64/x
  3. Step 3: Cross multiply
    10,120.88x = 15,115.78 × 10,054.64
  4. Step 4: Simplify right side
    10,120.88x = 151,983,726.22
  5. Step 5: Solve for x
    x = 151,983,726.22/10,120.88
  6. Step 6: Final answer
    x = 15,016.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.