Home / 20,615.10-28,448.92-11,183.66

Finding the Fourth Proportional to 20,615.10, 28,448.92 and 11,183.66

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Solution

The fourth proportional to 20,615.10, 28,448.92 and 11,183.66 is: 15,433.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615.10 : 28,448.92 = 11,183.66 : x
  2. Step 2: Convert to fraction form
    20,615.10/28,448.92 = 11,183.66/x
  3. Step 3: Cross multiply
    20,615.10x = 28,448.92 × 11,183.66
  4. Step 4: Simplify right side
    20,615.10x = 318,163,048.65
  5. Step 5: Solve for x
    x = 318,163,048.65/20,615.10
  6. Step 6: Final answer
    x = 15,433.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.