Home / 13,211.51-18,233.75-8,177.35

Finding the Fourth Proportional to 13,211.51, 18,233.75 and 8,177.35

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Solution

The fourth proportional to 13,211.51, 18,233.75 and 8,177.35 is: 11,285.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.51 : 18,233.75 = 8,177.35 : x
  2. Step 2: Convert to fraction form
    13,211.51/18,233.75 = 8,177.35/x
  3. Step 3: Cross multiply
    13,211.51x = 18,233.75 × 8,177.35
  4. Step 4: Simplify right side
    13,211.51x = 149,103,755.56
  5. Step 5: Solve for x
    x = 149,103,755.56/13,211.51
  6. Step 6: Final answer
    x = 11,285.90

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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.