Home / 28,091.72-38,766.52-15,516.48

Finding the Fourth Proportional to 28,091.72, 38,766.52 and 15,516.48

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Solution

The fourth proportional to 28,091.72, 38,766.52 and 15,516.48 is: 21,412.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.72 : 38,766.52 = 15,516.48 : x
  2. Step 2: Convert to fraction form
    28,091.72/38,766.52 = 15,516.48/x
  3. Step 3: Cross multiply
    28,091.72x = 38,766.52 × 15,516.48
  4. Step 4: Simplify right side
    28,091.72x = 601,519,932.25
  5. Step 5: Solve for x
    x = 601,519,932.25/28,091.72
  6. Step 6: Final answer
    x = 21,412.71

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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.