Home / 28,293.94-39,048.06-15,719.50

Finding the Fourth Proportional to 28,293.94, 39,048.06 and 15,719.50

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Solution

The fourth proportional to 28,293.94, 39,048.06 and 15,719.50 is: 21,694.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,293.94 : 39,048.06 = 15,719.50 : x
  2. Step 2: Convert to fraction form
    28,293.94/39,048.06 = 15,719.50/x
  3. Step 3: Cross multiply
    28,293.94x = 39,048.06 × 15,719.50
  4. Step 4: Simplify right side
    28,293.94x = 613,815,979.17
  5. Step 5: Solve for x
    x = 613,815,979.17/28,293.94
  6. Step 6: Final answer
    x = 21,694.26

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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.