Home / 20,071.20-27,671.04-16,921.92

Finding the Fourth Proportional to 20,071.20, 27,671.04 and 16,921.92

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Solution

The fourth proportional to 20,071.20, 27,671.04 and 16,921.92 is: 23,329.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.20 : 27,671.04 = 16,921.92 : x
  2. Step 2: Convert to fraction form
    20,071.20/27,671.04 = 16,921.92/x
  3. Step 3: Cross multiply
    20,071.20x = 27,671.04 × 16,921.92
  4. Step 4: Simplify right side
    20,071.20x = 468,247,125.20
  5. Step 5: Solve for x
    x = 468,247,125.20/20,071.20
  6. Step 6: Final answer
    x = 23,329.30

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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.