Home / 13,947.34-20,921.01-4,086.62

Finding the Fourth Proportional to 13,947.34, 20,921.01 and 4,086.62

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Solution

The fourth proportional to 13,947.34, 20,921.01 and 4,086.62 is: 6,129.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.34 : 20,921.01 = 4,086.62 : x
  2. Step 2: Convert to fraction form
    13,947.34/20,921.01 = 4,086.62/x
  3. Step 3: Cross multiply
    13,947.34x = 20,921.01 × 4,086.62
  4. Step 4: Simplify right side
    13,947.34x = 85,496,217.89
  5. Step 5: Solve for x
    x = 85,496,217.89/13,947.34
  6. Step 6: Final answer
    x = 6,129.93

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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.