Home / 13,185.42-19,778.13-3,325.47

Finding the Fourth Proportional to 13,185.42, 19,778.13 and 3,325.47

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Solution

The fourth proportional to 13,185.42, 19,778.13 and 3,325.47 is: 4,988.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.42 : 19,778.13 = 3,325.47 : x
  2. Step 2: Convert to fraction form
    13,185.42/19,778.13 = 3,325.47/x
  3. Step 3: Cross multiply
    13,185.42x = 19,778.13 × 3,325.47
  4. Step 4: Simplify right side
    13,185.42x = 65,771,577.97
  5. Step 5: Solve for x
    x = 65,771,577.97/13,185.42
  6. Step 6: Final answer
    x = 4,988.21

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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.