Home / 13,947.16-20,921.14-4,086.45

Finding the Fourth Proportional to 13,947.16, 20,921.14 and 4,086.45

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Solution

The fourth proportional to 13,947.16, 20,921.14 and 4,086.45 is: 6,129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.16 : 20,921.14 = 4,086.45 : x
  2. Step 2: Convert to fraction form
    13,947.16/20,921.14 = 4,086.45/x
  3. Step 3: Cross multiply
    13,947.16x = 20,921.14 × 4,086.45
  4. Step 4: Simplify right side
    13,947.16x = 85,493,192.55
  5. Step 5: Solve for x
    x = 85,493,192.55/13,947.16
  6. Step 6: Final answer
    x = 6,129.79

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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.