Home / 13,455.53-18,564.91-8,076.57

Finding the Fourth Proportional to 13,455.53, 18,564.91 and 8,076.57

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Solution

The fourth proportional to 13,455.53, 18,564.91 and 8,076.57 is: 11,143.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.53 : 18,564.91 = 8,076.57 : x
  2. Step 2: Convert to fraction form
    13,455.53/18,564.91 = 8,076.57/x
  3. Step 3: Cross multiply
    13,455.53x = 18,564.91 × 8,076.57
  4. Step 4: Simplify right side
    13,455.53x = 149,940,795.16
  5. Step 5: Solve for x
    x = 149,940,795.16/13,455.53
  6. Step 6: Final answer
    x = 11,143.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.