Home / 13,186.61-19,778.44-3,325.89

Finding the Fourth Proportional to 13,186.61, 19,778.44 and 3,325.89

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Solution

The fourth proportional to 13,186.61, 19,778.44 and 3,325.89 is: 4,988.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.61 : 19,778.44 = 3,325.89 : x
  2. Step 2: Convert to fraction form
    13,186.61/19,778.44 = 3,325.89/x
  3. Step 3: Cross multiply
    13,186.61x = 19,778.44 × 3,325.89
  4. Step 4: Simplify right side
    13,186.61x = 65,780,915.81
  5. Step 5: Solve for x
    x = 65,780,915.81/13,186.61
  6. Step 6: Final answer
    x = 4,988.46

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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.