Home / 13,178.53-18,190.61-8,706.25

Finding the Fourth Proportional to 13,178.53, 18,190.61 and 8,706.25

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Solution

The fourth proportional to 13,178.53, 18,190.61 and 8,706.25 is: 12,017.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.53 : 18,190.61 = 8,706.25 : x
  2. Step 2: Convert to fraction form
    13,178.53/18,190.61 = 8,706.25/x
  3. Step 3: Cross multiply
    13,178.53x = 18,190.61 × 8,706.25
  4. Step 4: Simplify right side
    13,178.53x = 158,371,998.31
  5. Step 5: Solve for x
    x = 158,371,998.31/13,178.53
  6. Step 6: Final answer
    x = 12,017.43

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Double scale
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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.