Home / 18,213.32-27,307.92-7,121.08

Finding the Fourth Proportional to 18,213.32, 27,307.92 and 7,121.08

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Solution

The fourth proportional to 18,213.32, 27,307.92 and 7,121.08 is: 10,676.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.32 : 27,307.92 = 7,121.08 : x
  2. Step 2: Convert to fraction form
    18,213.32/27,307.92 = 7,121.08/x
  3. Step 3: Cross multiply
    18,213.32x = 27,307.92 × 7,121.08
  4. Step 4: Simplify right side
    18,213.32x = 194,461,882.95
  5. Step 5: Solve for x
    x = 194,461,882.95/18,213.32
  6. Step 6: Final answer
    x = 10,676.90

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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.