Home / 20,615.97-28,450.59-11,184.53

Finding the Fourth Proportional to 20,615.97, 28,450.59 and 11,184.53

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Solution

The fourth proportional to 20,615.97, 28,450.59 and 11,184.53 is: 15,434.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615.97 : 28,450.59 = 11,184.53 : x
  2. Step 2: Convert to fraction form
    20,615.97/28,450.59 = 11,184.53/x
  3. Step 3: Cross multiply
    20,615.97x = 28,450.59 × 11,184.53
  4. Step 4: Simplify right side
    20,615.97x = 318,206,516.13
  5. Step 5: Solve for x
    x = 318,206,516.13/20,615.97
  6. Step 6: Final answer
    x = 15,434.95

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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.