Home / 12,986.19-17,927.46-8,516.79

Finding the Fourth Proportional to 12,986.19, 17,927.46 and 8,516.79

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Solution

The fourth proportional to 12,986.19, 17,927.46 and 8,516.79 is: 11,757.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.19 : 17,927.46 = 8,516.79 : x
  2. Step 2: Convert to fraction form
    12,986.19/17,927.46 = 8,516.79/x
  3. Step 3: Cross multiply
    12,986.19x = 17,927.46 × 8,516.79
  4. Step 4: Simplify right side
    12,986.19x = 152,684,412.05
  5. Step 5: Solve for x
    x = 152,684,412.05/12,986.19
  6. Step 6: Final answer
    x = 11,757.44

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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.