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Finding the Fourth Proportional to 20,633, 28,473.58 and 11,201.58

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Solution

The fourth proportional to 20,633, 28,473.58 and 11,201.58 is: 15,458.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633 : 28,473.58 = 11,201.58 : x
  2. Step 2: Convert to fraction form
    20,633/28,473.58 = 11,201.58/x
  3. Step 3: Cross multiply
    20,633x = 28,473.58 × 11,201.58
  4. Step 4: Simplify right side
    20,633x = 318,949,084.26
  5. Step 5: Solve for x
    x = 318,949,084.26/20,633
  6. Step 6: Final answer
    x = 15,458.20

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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.