Home / 20,299.64-30,443.31-7,818.70

Finding the Fourth Proportional to 20,299.64, 30,443.31 and 7,818.70

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Solution

The fourth proportional to 20,299.64, 30,443.31 and 7,818.70 is: 11,725.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.64 : 30,443.31 = 7,818.70 : x
  2. Step 2: Convert to fraction form
    20,299.64/30,443.31 = 7,818.70/x
  3. Step 3: Cross multiply
    20,299.64x = 30,443.31 × 7,818.70
  4. Step 4: Simplify right side
    20,299.64x = 238,027,107.90
  5. Step 5: Solve for x
    x = 238,027,107.90/20,299.64
  6. Step 6: Final answer
    x = 11,725.68

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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.