Home / 10,981.76-16,473.12-3,190.40

Finding the Fourth Proportional to 10,981.76, 16,473.12 and 3,190.40

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Solution

The fourth proportional to 10,981.76, 16,473.12 and 3,190.40 is: 4,785.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.76 : 16,473.12 = 3,190.40 : x
  2. Step 2: Convert to fraction form
    10,981.76/16,473.12 = 3,190.40/x
  3. Step 3: Cross multiply
    10,981.76x = 16,473.12 × 3,190.40
  4. Step 4: Simplify right side
    10,981.76x = 52,555,842.05
  5. Step 5: Solve for x
    x = 52,555,842.05/10,981.76
  6. Step 6: Final answer
    x = 4,785.74

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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.