Home / 15,230.46-21,020.76-9,181.79

Finding the Fourth Proportional to 15,230.46, 21,020.76 and 9,181.79

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Solution

The fourth proportional to 15,230.46, 21,020.76 and 9,181.79 is: 12,672.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,230.46 : 21,020.76 = 9,181.79 : x
  2. Step 2: Convert to fraction form
    15,230.46/21,020.76 = 9,181.79/x
  3. Step 3: Cross multiply
    15,230.46x = 21,020.76 × 9,181.79
  4. Step 4: Simplify right side
    15,230.46x = 193,008,098.86
  5. Step 5: Solve for x
    x = 193,008,098.86/15,230.46
  6. Step 6: Final answer
    x = 12,672.51

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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.