Home / 13,947.66-20,921.90-4,086.95

Finding the Fourth Proportional to 13,947.66, 20,921.90 and 4,086.95

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Solution

The fourth proportional to 13,947.66, 20,921.90 and 4,086.95 is: 6,130.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.66 : 20,921.90 = 4,086.95 : x
  2. Step 2: Convert to fraction form
    13,947.66/20,921.90 = 4,086.95/x
  3. Step 3: Cross multiply
    13,947.66x = 20,921.90 × 4,086.95
  4. Step 4: Simplify right side
    13,947.66x = 85,506,634.16
  5. Step 5: Solve for x
    x = 85,506,634.16/13,947.66
  6. Step 6: Final answer
    x = 6,130.54

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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.