Home / 20,746.36-28,631.46-12,791.80

Finding the Fourth Proportional to 20,746.36, 28,631.46 and 12,791.80

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Solution

The fourth proportional to 20,746.36, 28,631.46 and 12,791.80 is: 17,653.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.36 : 28,631.46 = 12,791.80 : x
  2. Step 2: Convert to fraction form
    20,746.36/28,631.46 = 12,791.80/x
  3. Step 3: Cross multiply
    20,746.36x = 28,631.46 × 12,791.80
  4. Step 4: Simplify right side
    20,746.36x = 366,247,910.03
  5. Step 5: Solve for x
    x = 366,247,910.03/20,746.36
  6. Step 6: Final answer
    x = 17,653.60

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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.