Home / 13,318.10-19,976.94-7,704.20

Finding the Fourth Proportional to 13,318.10, 19,976.94 and 7,704.20

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Solution

The fourth proportional to 13,318.10, 19,976.94 and 7,704.20 is: 11,556.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.10 : 19,976.94 = 7,704.20 : x
  2. Step 2: Convert to fraction form
    13,318.10/19,976.94 = 7,704.20/x
  3. Step 3: Cross multiply
    13,318.10x = 19,976.94 × 7,704.20
  4. Step 4: Simplify right side
    13,318.10x = 153,906,341.15
  5. Step 5: Solve for x
    x = 153,906,341.15/13,318.10
  6. Step 6: Final answer
    x = 11,556.18

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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.