Home / 28,979.16-39,987.92-16,230.58

Finding the Fourth Proportional to 28,979.16, 39,987.92 and 16,230.58

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Solution

The fourth proportional to 28,979.16, 39,987.92 and 16,230.58 is: 22,396.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979.16 : 39,987.92 = 16,230.58 : x
  2. Step 2: Convert to fraction form
    28,979.16/39,987.92 = 16,230.58/x
  3. Step 3: Cross multiply
    28,979.16x = 39,987.92 × 16,230.58
  4. Step 4: Simplify right side
    28,979.16x = 649,027,134.59
  5. Step 5: Solve for x
    x = 649,027,134.59/28,979.16
  6. Step 6: Final answer
    x = 22,396.34

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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.