Home / 20,880.90-31,326.66-6,841.87

Finding the Fourth Proportional to 20,880.90, 31,326.66 and 6,841.87

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Solution

The fourth proportional to 20,880.90, 31,326.66 and 6,841.87 is: 10,264.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,880.90 : 31,326.66 = 6,841.87 : x
  2. Step 2: Convert to fraction form
    20,880.90/31,326.66 = 6,841.87/x
  3. Step 3: Cross multiply
    20,880.90x = 31,326.66 × 6,841.87
  4. Step 4: Simplify right side
    20,880.90x = 214,332,935.25
  5. Step 5: Solve for x
    x = 214,332,935.25/20,880.90
  6. Step 6: Final answer
    x = 10,264.54

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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.