Home / 28,516.74-39,351.48-15,769.17

Finding the Fourth Proportional to 28,516.74, 39,351.48 and 15,769.17

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Solution

The fourth proportional to 28,516.74, 39,351.48 and 15,769.17 is: 21,760.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516.74 : 39,351.48 = 15,769.17 : x
  2. Step 2: Convert to fraction form
    28,516.74/39,351.48 = 15,769.17/x
  3. Step 3: Cross multiply
    28,516.74x = 39,351.48 × 15,769.17
  4. Step 4: Simplify right side
    28,516.74x = 620,540,177.87
  5. Step 5: Solve for x
    x = 620,540,177.87/28,516.74
  6. Step 6: Final answer
    x = 21,760.56

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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.