Home / 20,874.28-28,806.06-11,442.64

Finding the Fourth Proportional to 20,874.28, 28,806.06 and 11,442.64

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Solution

The fourth proportional to 20,874.28, 28,806.06 and 11,442.64 is: 15,790.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,874.28 : 28,806.06 = 11,442.64 : x
  2. Step 2: Convert to fraction form
    20,874.28/28,806.06 = 11,442.64/x
  3. Step 3: Cross multiply
    20,874.28x = 28,806.06 × 11,442.64
  4. Step 4: Simplify right side
    20,874.28x = 329,617,374.40
  5. Step 5: Solve for x
    x = 329,617,374.40/20,874.28
  6. Step 6: Final answer
    x = 15,790.60

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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.