Home / 13,177.16-18,188.71-8,704.88

Finding the Fourth Proportional to 13,177.16, 18,188.71 and 8,704.88

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Solution

The fourth proportional to 13,177.16, 18,188.71 and 8,704.88 is: 12,015.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,177.16 : 18,188.71 = 8,704.88 : x
  2. Step 2: Convert to fraction form
    13,177.16/18,188.71 = 8,704.88/x
  3. Step 3: Cross multiply
    13,177.16x = 18,188.71 × 8,704.88
  4. Step 4: Simplify right side
    13,177.16x = 158,330,537.90
  5. Step 5: Solve for x
    x = 158,330,537.90/13,177.16
  6. Step 6: Final answer
    x = 12,015.53

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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.