Home / 10,981.52-16,472.30-3,190.40

Finding the Fourth Proportional to 10,981.52, 16,472.30 and 3,190.40

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Solution

The fourth proportional to 10,981.52, 16,472.30 and 3,190.40 is: 4,785.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.52 : 16,472.30 = 3,190.40 : x
  2. Step 2: Convert to fraction form
    10,981.52/16,472.30 = 3,190.40/x
  3. Step 3: Cross multiply
    10,981.52x = 16,472.30 × 3,190.40
  4. Step 4: Simplify right side
    10,981.52x = 52,553,225.92
  5. Step 5: Solve for x
    x = 52,553,225.92/10,981.52
  6. Step 6: Final answer
    x = 4,785.61

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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.