Home / 28,317.25-39,077.81-15,744.43

Finding the Fourth Proportional to 28,317.25, 39,077.81 and 15,744.43

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Solution

The fourth proportional to 28,317.25, 39,077.81 and 15,744.43 is: 21,727.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,317.25 : 39,077.81 = 15,744.43 : x
  2. Step 2: Convert to fraction form
    28,317.25/39,077.81 = 15,744.43/x
  3. Step 3: Cross multiply
    28,317.25x = 39,077.81 × 15,744.43
  4. Step 4: Simplify right side
    28,317.25x = 615,257,844.10
  5. Step 5: Solve for x
    x = 615,257,844.10/28,317.25
  6. Step 6: Final answer
    x = 21,727.32

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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.