Home / 13,148.28-19,719.47-3,786.21

Finding the Fourth Proportional to 13,148.28, 19,719.47 and 3,786.21

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Solution

The fourth proportional to 13,148.28, 19,719.47 and 3,786.21 is: 5,678.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.28 : 19,719.47 = 3,786.21 : x
  2. Step 2: Convert to fraction form
    13,148.28/19,719.47 = 3,786.21/x
  3. Step 3: Cross multiply
    13,148.28x = 19,719.47 × 3,786.21
  4. Step 4: Simplify right side
    13,148.28x = 74,662,063.97
  5. Step 5: Solve for x
    x = 74,662,063.97/13,148.28
  6. Step 6: Final answer
    x = 5,678.47

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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.