Home / 13,256.06-18,285.74-8,279.42

Finding the Fourth Proportional to 13,256.06, 18,285.74 and 8,279.42

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Solution

The fourth proportional to 13,256.06, 18,285.74 and 8,279.42 is: 11,420.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,256.06 : 18,285.74 = 8,279.42 : x
  2. Step 2: Convert to fraction form
    13,256.06/18,285.74 = 8,279.42/x
  3. Step 3: Cross multiply
    13,256.06x = 18,285.74 × 8,279.42
  4. Step 4: Simplify right side
    13,256.06x = 151,395,321.47
  5. Step 5: Solve for x
    x = 151,395,321.47/13,256.06
  6. Step 6: Final answer
    x = 11,420.84

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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.