Home / 13,385.92-18,373.64-11,860.48

Finding the Fourth Proportional to 13,385.92, 18,373.64 and 11,860.48

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Solution

The fourth proportional to 13,385.92, 18,373.64 and 11,860.48 is: 16,279.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.92 : 18,373.64 = 11,860.48 : x
  2. Step 2: Convert to fraction form
    13,385.92/18,373.64 = 11,860.48/x
  3. Step 3: Cross multiply
    13,385.92x = 18,373.64 × 11,860.48
  4. Step 4: Simplify right side
    13,385.92x = 217,920,189.75
  5. Step 5: Solve for x
    x = 217,920,189.75/13,385.92
  6. Step 6: Final answer
    x = 16,279.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.