Home / 28,295.14-39,048.53-15,719.89

Finding the Fourth Proportional to 28,295.14, 39,048.53 and 15,719.89

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Solution

The fourth proportional to 28,295.14, 39,048.53 and 15,719.89 is: 21,694.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,295.14 : 39,048.53 = 15,719.89 : x
  2. Step 2: Convert to fraction form
    28,295.14/39,048.53 = 15,719.89/x
  3. Step 3: Cross multiply
    28,295.14x = 39,048.53 × 15,719.89
  4. Step 4: Simplify right side
    28,295.14x = 613,838,517.66
  5. Step 5: Solve for x
    x = 613,838,517.66/28,295.14
  6. Step 6: Final answer
    x = 21,694.13

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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.