Home / 28,516.66-39,351.86-15,769.01

Finding the Fourth Proportional to 28,516.66, 39,351.86 and 15,769.01

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Solution

The fourth proportional to 28,516.66, 39,351.86 and 15,769.01 is: 21,760.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516.66 : 39,351.86 = 15,769.01 : x
  2. Step 2: Convert to fraction form
    28,516.66/39,351.86 = 15,769.01/x
  3. Step 3: Cross multiply
    28,516.66x = 39,351.86 × 15,769.01
  4. Step 4: Simplify right side
    28,516.66x = 620,539,795.01
  5. Step 5: Solve for x
    x = 620,539,795.01/28,516.66
  6. Step 6: Final answer
    x = 21,760.61

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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.