Home / 13,267.61-18,301.70-8,290.97

Finding the Fourth Proportional to 13,267.61, 18,301.70 and 8,290.97

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Solution

The fourth proportional to 13,267.61, 18,301.70 and 8,290.97 is: 11,436.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,267.61 : 18,301.70 = 8,290.97 : x
  2. Step 2: Convert to fraction form
    13,267.61/18,301.70 = 8,290.97/x
  3. Step 3: Cross multiply
    13,267.61x = 18,301.70 × 8,290.97
  4. Step 4: Simplify right side
    13,267.61x = 151,738,796.86
  5. Step 5: Solve for x
    x = 151,738,796.86/13,267.61
  6. Step 6: Final answer
    x = 11,436.79

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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.