Home / 28,055.80-38,716.96-15,480.54

Finding the Fourth Proportional to 28,055.80, 38,716.96 and 15,480.54

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Solution

The fourth proportional to 28,055.80, 38,716.96 and 15,480.54 is: 21,363.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,055.80 : 38,716.96 = 15,480.54 : x
  2. Step 2: Convert to fraction form
    28,055.80/38,716.96 = 15,480.54/x
  3. Step 3: Cross multiply
    28,055.80x = 38,716.96 × 15,480.54
  4. Step 4: Simplify right side
    28,055.80x = 599,359,447.96
  5. Step 5: Solve for x
    x = 599,359,447.96/28,055.80
  6. Step 6: Final answer
    x = 21,363.12

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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.