Home / 20,616.54-28,450.71-11,184.90

Finding the Fourth Proportional to 20,616.54, 28,450.71 and 11,184.90

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Solution

The fourth proportional to 20,616.54, 28,450.71 and 11,184.90 is: 15,435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.54 : 28,450.71 = 11,184.90 : x
  2. Step 2: Convert to fraction form
    20,616.54/28,450.71 = 11,184.90/x
  3. Step 3: Cross multiply
    20,616.54x = 28,450.71 × 11,184.90
  4. Step 4: Simplify right side
    20,616.54x = 318,218,360.87
  5. Step 5: Solve for x
    x = 318,218,360.87/20,616.54
  6. Step 6: Final answer
    x = 15,435.10

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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.