Home / 13,938.12-20,912.31-6,544.98

Finding the Fourth Proportional to 13,938.12, 20,912.31 and 6,544.98

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Solution

The fourth proportional to 13,938.12, 20,912.31 and 6,544.98 is: 9,819.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.12 : 20,912.31 = 6,544.98 : x
  2. Step 2: Convert to fraction form
    13,938.12/20,912.31 = 6,544.98/x
  3. Step 3: Cross multiply
    13,938.12x = 20,912.31 × 6,544.98
  4. Step 4: Simplify right side
    13,938.12x = 136,870,650.70
  5. Step 5: Solve for x
    x = 136,870,650.70/13,938.12
  6. Step 6: Final answer
    x = 9,819.88

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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.