Home / 20,918.01-31,370.34-6,874.80

Finding the Fourth Proportional to 20,918.01, 31,370.34 and 6,874.80

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Solution

The fourth proportional to 20,918.01, 31,370.34 and 6,874.80 is: 10,310.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,918.01 : 31,370.34 = 6,874.80 : x
  2. Step 2: Convert to fraction form
    20,918.01/31,370.34 = 6,874.80/x
  3. Step 3: Cross multiply
    20,918.01x = 31,370.34 × 6,874.80
  4. Step 4: Simplify right side
    20,918.01x = 215,664,813.43
  5. Step 5: Solve for x
    x = 215,664,813.43/20,918.01
  6. Step 6: Final answer
    x = 10,310.01

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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.