Home / 20,970.08-28,949.42-16,179.26

Finding the Fourth Proportional to 20,970.08, 28,949.42 and 16,179.26

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Solution

The fourth proportional to 20,970.08, 28,949.42 and 16,179.26 is: 22,335.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970.08 : 28,949.42 = 16,179.26 : x
  2. Step 2: Convert to fraction form
    20,970.08/28,949.42 = 16,179.26/x
  3. Step 3: Cross multiply
    20,970.08x = 28,949.42 × 16,179.26
  4. Step 4: Simplify right side
    20,970.08x = 468,380,088.73
  5. Step 5: Solve for x
    x = 468,380,088.73/20,970.08
  6. Step 6: Final answer
    x = 22,335.64

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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.