Home / 13,290.30-18,343.13-8,256.56

Finding the Fourth Proportional to 13,290.30, 18,343.13 and 8,256.56

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Solution

The fourth proportional to 13,290.30, 18,343.13 and 8,256.56 is: 11,395.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.30 : 18,343.13 = 8,256.56 : x
  2. Step 2: Convert to fraction form
    13,290.30/18,343.13 = 8,256.56/x
  3. Step 3: Cross multiply
    13,290.30x = 18,343.13 × 8,256.56
  4. Step 4: Simplify right side
    13,290.30x = 151,451,020.43
  5. Step 5: Solve for x
    x = 151,451,020.43/13,290.30
  6. Step 6: Final answer
    x = 11,395.61

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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.