Home / 20,895.12-31,348.08-7,747.92

Finding the Fourth Proportional to 20,895.12, 31,348.08 and 7,747.92

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Solution

The fourth proportional to 20,895.12, 31,348.08 and 7,747.92 is: 11,623.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.12 : 31,348.08 = 7,747.92 : x
  2. Step 2: Convert to fraction form
    20,895.12/31,348.08 = 7,747.92/x
  3. Step 3: Cross multiply
    20,895.12x = 31,348.08 × 7,747.92
  4. Step 4: Simplify right side
    20,895.12x = 242,882,415.99
  5. Step 5: Solve for x
    x = 242,882,415.99/20,895.12
  6. Step 6: Final answer
    x = 11,623.88

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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.