Home / 20,860.16-31,292.85-6,821.60

Finding the Fourth Proportional to 20,860.16, 31,292.85 and 6,821.60

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Solution

The fourth proportional to 20,860.16, 31,292.85 and 6,821.60 is: 10,233.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860.16 : 31,292.85 = 6,821.60 : x
  2. Step 2: Convert to fraction form
    20,860.16/31,292.85 = 6,821.60/x
  3. Step 3: Cross multiply
    20,860.16x = 31,292.85 × 6,821.60
  4. Step 4: Simplify right side
    20,860.16x = 213,467,305.56
  5. Step 5: Solve for x
    x = 213,467,305.56/20,860.16
  6. Step 6: Final answer
    x = 10,233.25

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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.