Home / 13,921.16-20,881.32-3,532.90

Finding the Fourth Proportional to 13,921.16, 20,881.32 and 3,532.90

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Solution

The fourth proportional to 13,921.16, 20,881.32 and 3,532.90 is: 5,299.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.16 : 20,881.32 = 3,532.90 : x
  2. Step 2: Convert to fraction form
    13,921.16/20,881.32 = 3,532.90/x
  3. Step 3: Cross multiply
    13,921.16x = 20,881.32 × 3,532.90
  4. Step 4: Simplify right side
    13,921.16x = 73,771,615.43
  5. Step 5: Solve for x
    x = 73,771,615.43/13,921.16
  6. Step 6: Final answer
    x = 5,299.24

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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.