Home / 13,639.64-20,458.62-4,874.12

Finding the Fourth Proportional to 13,639.64, 20,458.62 and 4,874.12

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Solution

The fourth proportional to 13,639.64, 20,458.62 and 4,874.12 is: 7,310.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.64 : 20,458.62 = 4,874.12 : x
  2. Step 2: Convert to fraction form
    13,639.64/20,458.62 = 4,874.12/x
  3. Step 3: Cross multiply
    13,639.64x = 20,458.62 × 4,874.12
  4. Step 4: Simplify right side
    13,639.64x = 99,717,768.91
  5. Step 5: Solve for x
    x = 99,717,768.91/13,639.64
  6. Step 6: Final answer
    x = 7,310.88

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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.