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Finding the Fourth Proportional to 28,452.66, 42,684.48 and 10,921.12

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Solution

The fourth proportional to 28,452.66, 42,684.48 and 10,921.12 is: 16,383.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,452.66 : 42,684.48 = 10,921.12 : x
  2. Step 2: Convert to fraction form
    28,452.66/42,684.48 = 10,921.12/x
  3. Step 3: Cross multiply
    28,452.66x = 42,684.48 × 10,921.12
  4. Step 4: Simplify right side
    28,452.66x = 466,162,328.22
  5. Step 5: Solve for x
    x = 466,162,328.22/28,452.66
  6. Step 6: Final answer
    x = 16,383.79

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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.