Home / 15,231.30-21,019.05-8,516.85

Finding the Fourth Proportional to 15,231.30, 21,019.05 and 8,516.85

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Solution

The fourth proportional to 15,231.30, 21,019.05 and 8,516.85 is: 11,753.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,231.30 : 21,019.05 = 8,516.85 : x
  2. Step 2: Convert to fraction form
    15,231.30/21,019.05 = 8,516.85/x
  3. Step 3: Cross multiply
    15,231.30x = 21,019.05 × 8,516.85
  4. Step 4: Simplify right side
    15,231.30x = 179,016,095.99
  5. Step 5: Solve for x
    x = 179,016,095.99/15,231.30
  6. Step 6: Final answer
    x = 11,753.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.