Home / 13,170.56-18,172.89-8,925.03

Finding the Fourth Proportional to 13,170.56, 18,172.89 and 8,925.03

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Solution

The fourth proportional to 13,170.56, 18,172.89 and 8,925.03 is: 12,314.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.56 : 18,172.89 = 8,925.03 : x
  2. Step 2: Convert to fraction form
    13,170.56/18,172.89 = 8,925.03/x
  3. Step 3: Cross multiply
    13,170.56x = 18,172.89 × 8,925.03
  4. Step 4: Simplify right side
    13,170.56x = 162,193,588.44
  5. Step 5: Solve for x
    x = 162,193,588.44/13,170.56
  6. Step 6: Final answer
    x = 12,314.86

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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.