Home / 13,174.45-18,182.40-8,640.96

Finding the Fourth Proportional to 13,174.45, 18,182.40 and 8,640.96

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Solution

The fourth proportional to 13,174.45, 18,182.40 and 8,640.96 is: 11,925.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,174.45 : 18,182.40 = 8,640.96 : x
  2. Step 2: Convert to fraction form
    13,174.45/18,182.40 = 8,640.96/x
  3. Step 3: Cross multiply
    13,174.45x = 18,182.40 × 8,640.96
  4. Step 4: Simplify right side
    13,174.45x = 157,113,391.10
  5. Step 5: Solve for x
    x = 157,113,391.10/13,174.45
  6. Step 6: Final answer
    x = 11,925.61

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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.