Home / 28,340.96-39,112.08-15,765.44

Finding the Fourth Proportional to 28,340.96, 39,112.08 and 15,765.44

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Solution

The fourth proportional to 28,340.96, 39,112.08 and 15,765.44 is: 21,757.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,340.96 : 39,112.08 = 15,765.44 : x
  2. Step 2: Convert to fraction form
    28,340.96/39,112.08 = 15,765.44/x
  3. Step 3: Cross multiply
    28,340.96x = 39,112.08 × 15,765.44
  4. Step 4: Simplify right side
    28,340.96x = 616,619,150.52
  5. Step 5: Solve for x
    x = 616,619,150.52/28,340.96
  6. Step 6: Final answer
    x = 21,757.17

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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.