Home / 13,558.56-20,330.64-6,982.08

Finding the Fourth Proportional to 13,558.56, 20,330.64 and 6,982.08

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Solution

The fourth proportional to 13,558.56, 20,330.64 and 6,982.08 is: 10,469.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,558.56 : 20,330.64 = 6,982.08 : x
  2. Step 2: Convert to fraction form
    13,558.56/20,330.64 = 6,982.08/x
  3. Step 3: Cross multiply
    13,558.56x = 20,330.64 × 6,982.08
  4. Step 4: Simplify right side
    13,558.56x = 141,950,154.93
  5. Step 5: Solve for x
    x = 141,950,154.93/13,558.56
  6. Step 6: Final answer
    x = 10,469.41

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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.