Home / 13,947.50-20,921.24-4,086.77

Finding the Fourth Proportional to 13,947.50, 20,921.24 and 4,086.77

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Solution

The fourth proportional to 13,947.50, 20,921.24 and 4,086.77 is: 6,130.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.50 : 20,921.24 = 4,086.77 : x
  2. Step 2: Convert to fraction form
    13,947.50/20,921.24 = 4,086.77/x
  3. Step 3: Cross multiply
    13,947.50x = 20,921.24 × 4,086.77
  4. Step 4: Simplify right side
    13,947.50x = 85,500,295.99
  5. Step 5: Solve for x
    x = 85,500,295.99/13,947.50
  6. Step 6: Final answer
    x = 6,130.15

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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.