Home / 13,146.39-19,719.21-3,786.45

Finding the Fourth Proportional to 13,146.39, 19,719.21 and 3,786.45

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Solution

The fourth proportional to 13,146.39, 19,719.21 and 3,786.45 is: 5,679.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146.39 : 19,719.21 = 3,786.45 : x
  2. Step 2: Convert to fraction form
    13,146.39/19,719.21 = 3,786.45/x
  3. Step 3: Cross multiply
    13,146.39x = 19,719.21 × 3,786.45
  4. Step 4: Simplify right side
    13,146.39x = 74,665,802.70
  5. Step 5: Solve for x
    x = 74,665,802.70/13,146.39
  6. Step 6: Final answer
    x = 5,679.57

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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.