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Finding the Fourth Proportional to 13,310.92, 19,940.84 and 7,449.76

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Solution

The fourth proportional to 13,310.92, 19,940.84 and 7,449.76 is: 11,160.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,310.92 : 19,940.84 = 7,449.76 : x
  2. Step 2: Convert to fraction form
    13,310.92/19,940.84 = 7,449.76/x
  3. Step 3: Cross multiply
    13,310.92x = 19,940.84 × 7,449.76
  4. Step 4: Simplify right side
    13,310.92x = 148,554,472.20
  5. Step 5: Solve for x
    x = 148,554,472.20/13,310.92
  6. Step 6: Final answer
    x = 11,160.35

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1.5x scale

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.