Home / 10,663.24-15,981.90-4,811.80

Finding the Fourth Proportional to 10,663.24, 15,981.90 and 4,811.80

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Solution

The fourth proportional to 10,663.24, 15,981.90 and 4,811.80 is: 7,211.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,663.24 : 15,981.90 = 4,811.80 : x
  2. Step 2: Convert to fraction form
    10,663.24/15,981.90 = 4,811.80/x
  3. Step 3: Cross multiply
    10,663.24x = 15,981.90 × 4,811.80
  4. Step 4: Simplify right side
    10,663.24x = 76,901,706.42
  5. Step 5: Solve for x
    x = 76,901,706.42/10,663.24
  6. Step 6: Final answer
    x = 7,211.85

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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.