Home / 21,049.29-31,546.65-8,554.79

Finding the Fourth Proportional to 21,049.29, 31,546.65 and 8,554.79

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Solution

The fourth proportional to 21,049.29, 31,546.65 and 8,554.79 is: 12,821.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,049.29 : 31,546.65 = 8,554.79 : x
  2. Step 2: Convert to fraction form
    21,049.29/31,546.65 = 8,554.79/x
  3. Step 3: Cross multiply
    21,049.29x = 31,546.65 × 8,554.79
  4. Step 4: Simplify right side
    21,049.29x = 269,874,776.14
  5. Step 5: Solve for x
    x = 269,874,776.14/21,049.29
  6. Step 6: Final answer
    x = 12,821.09

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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.