Home / 13,180.55-18,188.38-7,211.03

Finding the Fourth Proportional to 13,180.55, 18,188.38 and 7,211.03

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Solution

The fourth proportional to 13,180.55, 18,188.38 and 7,211.03 is: 9,950.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180.55 : 18,188.38 = 7,211.03 : x
  2. Step 2: Convert to fraction form
    13,180.55/18,188.38 = 7,211.03/x
  3. Step 3: Cross multiply
    13,180.55x = 18,188.38 × 7,211.03
  4. Step 4: Simplify right side
    13,180.55x = 131,156,953.83
  5. Step 5: Solve for x
    x = 131,156,953.83/13,180.55
  6. Step 6: Final answer
    x = 9,950.80

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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.