Home / 13,186.56-18,199.80-7,881.96

Finding the Fourth Proportional to 13,186.56, 18,199.80 and 7,881.96

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Solution

The fourth proportional to 13,186.56, 18,199.80 and 7,881.96 is: 10,878.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.56 : 18,199.80 = 7,881.96 : x
  2. Step 2: Convert to fraction form
    13,186.56/18,199.80 = 7,881.96/x
  3. Step 3: Cross multiply
    13,186.56x = 18,199.80 × 7,881.96
  4. Step 4: Simplify right side
    13,186.56x = 143,450,095.61
  5. Step 5: Solve for x
    x = 143,450,095.61/13,186.56
  6. Step 6: Final answer
    x = 10,878.51

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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.