Home / 13,117.56-18,194.93-12,644.70

Finding the Fourth Proportional to 13,117.56, 18,194.93 and 12,644.70

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Solution

The fourth proportional to 13,117.56, 18,194.93 and 12,644.70 is: 17,539.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.56 : 18,194.93 = 12,644.70 : x
  2. Step 2: Convert to fraction form
    13,117.56/18,194.93 = 12,644.70/x
  3. Step 3: Cross multiply
    13,117.56x = 18,194.93 × 12,644.70
  4. Step 4: Simplify right side
    13,117.56x = 230,069,431.37
  5. Step 5: Solve for x
    x = 230,069,431.37/13,117.56
  6. Step 6: Final answer
    x = 17,539.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.