Home / 20,852.57-31,282.28-6,808.55

Finding the Fourth Proportional to 20,852.57, 31,282.28 and 6,808.55

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Solution

The fourth proportional to 20,852.57, 31,282.28 and 6,808.55 is: 10,213.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.57 : 31,282.28 = 6,808.55 : x
  2. Step 2: Convert to fraction form
    20,852.57/31,282.28 = 6,808.55/x
  3. Step 3: Cross multiply
    20,852.57x = 31,282.28 × 6,808.55
  4. Step 4: Simplify right side
    20,852.57x = 212,986,777.04
  5. Step 5: Solve for x
    x = 212,986,777.04/20,852.57
  6. Step 6: Final answer
    x = 10,213.94

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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.