Home / 28,512.58-39,346.59-15,939.76

Finding the Fourth Proportional to 28,512.58, 39,346.59 and 15,939.76

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Solution

The fourth proportional to 28,512.58, 39,346.59 and 15,939.76 is: 21,996.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.58 : 39,346.59 = 15,939.76 : x
  2. Step 2: Convert to fraction form
    28,512.58/39,346.59 = 15,939.76/x
  3. Step 3: Cross multiply
    28,512.58x = 39,346.59 × 15,939.76
  4. Step 4: Simplify right side
    28,512.58x = 627,175,201.42
  5. Step 5: Solve for x
    x = 627,175,201.42/28,512.58
  6. Step 6: Final answer
    x = 21,996.44

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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.