Home / 20,922.81-31,388.97-6,882.98

Finding the Fourth Proportional to 20,922.81, 31,388.97 and 6,882.98

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Solution

The fourth proportional to 20,922.81, 31,388.97 and 6,882.98 is: 10,326.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.81 : 31,388.97 = 6,882.98 : x
  2. Step 2: Convert to fraction form
    20,922.81/31,388.97 = 6,882.98/x
  3. Step 3: Cross multiply
    20,922.81x = 31,388.97 × 6,882.98
  4. Step 4: Simplify right side
    20,922.81x = 216,049,482.88
  5. Step 5: Solve for x
    x = 216,049,482.88/20,922.81
  6. Step 6: Final answer
    x = 10,326.03

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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.