Home / 11,328.43-16,990.17-3,430.66

Finding the Fourth Proportional to 11,328.43, 16,990.17 and 3,430.66

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Solution

The fourth proportional to 11,328.43, 16,990.17 and 3,430.66 is: 5,145.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,328.43 : 16,990.17 = 3,430.66 : x
  2. Step 2: Convert to fraction form
    11,328.43/16,990.17 = 3,430.66/x
  3. Step 3: Cross multiply
    11,328.43x = 16,990.17 × 3,430.66
  4. Step 4: Simplify right side
    11,328.43x = 58,287,496.61
  5. Step 5: Solve for x
    x = 58,287,496.61/11,328.43
  6. Step 6: Final answer
    x = 5,145.24

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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.