Home / 20,859.35-31,292.42-6,815.30

Finding the Fourth Proportional to 20,859.35, 31,292.42 and 6,815.30

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Solution

The fourth proportional to 20,859.35, 31,292.42 and 6,815.30 is: 10,224.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.35 : 31,292.42 = 6,815.30 : x
  2. Step 2: Convert to fraction form
    20,859.35/31,292.42 = 6,815.30/x
  3. Step 3: Cross multiply
    20,859.35x = 31,292.42 × 6,815.30
  4. Step 4: Simplify right side
    20,859.35x = 213,267,039.49
  5. Step 5: Solve for x
    x = 213,267,039.49/20,859.35
  6. Step 6: Final answer
    x = 10,224.05

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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.