Home / 13,921.68-20,881.98-3,533.34

Finding the Fourth Proportional to 13,921.68, 20,881.98 and 3,533.34

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Solution

The fourth proportional to 13,921.68, 20,881.98 and 3,533.34 is: 5,299.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.68 : 20,881.98 = 3,533.34 : x
  2. Step 2: Convert to fraction form
    13,921.68/20,881.98 = 3,533.34/x
  3. Step 3: Cross multiply
    13,921.68x = 20,881.98 × 3,533.34
  4. Step 4: Simplify right side
    13,921.68x = 73,783,135.21
  5. Step 5: Solve for x
    x = 73,783,135.21/13,921.68
  6. Step 6: Final answer
    x = 5,299.87

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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.