Home / 28,087.77-38,760.87-15,512.25

Finding the Fourth Proportional to 28,087.77, 38,760.87 and 15,512.25

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Solution

The fourth proportional to 28,087.77, 38,760.87 and 15,512.25 is: 21,406.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,087.77 : 38,760.87 = 15,512.25 : x
  2. Step 2: Convert to fraction form
    28,087.77/38,760.87 = 15,512.25/x
  3. Step 3: Cross multiply
    28,087.77x = 38,760.87 × 15,512.25
  4. Step 4: Simplify right side
    28,087.77x = 601,268,305.66
  5. Step 5: Solve for x
    x = 601,268,305.66/28,087.77
  6. Step 6: Final answer
    x = 21,406.77

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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.