Home / 12,719.06-17,558.07-8,188.28

Finding the Fourth Proportional to 12,719.06, 17,558.07 and 8,188.28

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Solution

The fourth proportional to 12,719.06, 17,558.07 and 8,188.28 is: 11,303.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,719.06 : 17,558.07 = 8,188.28 : x
  2. Step 2: Convert to fraction form
    12,719.06/17,558.07 = 8,188.28/x
  3. Step 3: Cross multiply
    12,719.06x = 17,558.07 × 8,188.28
  4. Step 4: Simplify right side
    12,719.06x = 143,770,393.42
  5. Step 5: Solve for x
    x = 143,770,393.42/12,719.06
  6. Step 6: Final answer
    x = 11,303.54

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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.