Home / 28,109.59-38,791.74-15,363.31

Finding the Fourth Proportional to 28,109.59, 38,791.74 and 15,363.31

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Solution

The fourth proportional to 28,109.59, 38,791.74 and 15,363.31 is: 21,201.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,109.59 : 38,791.74 = 15,363.31 : x
  2. Step 2: Convert to fraction form
    28,109.59/38,791.74 = 15,363.31/x
  3. Step 3: Cross multiply
    28,109.59x = 38,791.74 × 15,363.31
  4. Step 4: Simplify right side
    28,109.59x = 595,969,527.06
  5. Step 5: Solve for x
    x = 595,969,527.06/28,109.59
  6. Step 6: Final answer
    x = 21,201.64

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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.