Home / 28,721.12-39,634.31-17,397.32

Finding the Fourth Proportional to 28,721.12, 39,634.31 and 17,397.32

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Solution

The fourth proportional to 28,721.12, 39,634.31 and 17,397.32 is: 24,007.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.12 : 39,634.31 = 17,397.32 : x
  2. Step 2: Convert to fraction form
    28,721.12/39,634.31 = 17,397.32/x
  3. Step 3: Cross multiply
    28,721.12x = 39,634.31 × 17,397.32
  4. Step 4: Simplify right side
    28,721.12x = 689,530,619.37
  5. Step 5: Solve for x
    x = 689,530,619.37/28,721.12
  6. Step 6: Final answer
    x = 24,007.79

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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.