Home / 13,186.21-19,778.61-3,699.18

Finding the Fourth Proportional to 13,186.21, 19,778.61 and 3,699.18

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Solution

The fourth proportional to 13,186.21, 19,778.61 and 3,699.18 is: 5,548.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.21 : 19,778.61 = 3,699.18 : x
  2. Step 2: Convert to fraction form
    13,186.21/19,778.61 = 3,699.18/x
  3. Step 3: Cross multiply
    13,186.21x = 19,778.61 × 3,699.18
  4. Step 4: Simplify right side
    13,186.21x = 73,164,630.70
  5. Step 5: Solve for x
    x = 73,164,630.70/13,186.21
  6. Step 6: Final answer
    x = 5,548.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.