Home / 28,054.56-38,716.11-15,480.12

Finding the Fourth Proportional to 28,054.56, 38,716.11 and 15,480.12

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Solution

The fourth proportional to 28,054.56, 38,716.11 and 15,480.12 is: 21,363.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,054.56 : 38,716.11 = 15,480.12 : x
  2. Step 2: Convert to fraction form
    28,054.56/38,716.11 = 15,480.12/x
  3. Step 3: Cross multiply
    28,054.56x = 38,716.11 × 15,480.12
  4. Step 4: Simplify right side
    28,054.56x = 599,330,028.73
  5. Step 5: Solve for x
    x = 599,330,028.73/28,054.56
  6. Step 6: Final answer
    x = 21,363.02

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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.