Home / 20,746.80-31,120.20-16,081.20

Finding the Fourth Proportional to 20,746.80, 31,120.20 and 16,081.20

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Solution

The fourth proportional to 20,746.80, 31,120.20 and 16,081.20 is: 24,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.80 : 31,120.20 = 16,081.20 : x
  2. Step 2: Convert to fraction form
    20,746.80/31,120.20 = 16,081.20/x
  3. Step 3: Cross multiply
    20,746.80x = 31,120.20 × 16,081.20
  4. Step 4: Simplify right side
    20,746.80x = 500,450,160.24
  5. Step 5: Solve for x
    x = 500,450,160.24/20,746.80
  6. Step 6: Final answer
    x = 24,121.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.