Home / 12,838.14-19,258.45-3,478.28

Finding the Fourth Proportional to 12,838.14, 19,258.45 and 3,478.28

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Solution

The fourth proportional to 12,838.14, 19,258.45 and 3,478.28 is: 5,217.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,838.14 : 19,258.45 = 3,478.28 : x
  2. Step 2: Convert to fraction form
    12,838.14/19,258.45 = 3,478.28/x
  3. Step 3: Cross multiply
    12,838.14x = 19,258.45 × 3,478.28
  4. Step 4: Simplify right side
    12,838.14x = 66,986,176.48
  5. Step 5: Solve for x
    x = 66,986,176.48/12,838.14
  6. Step 6: Final answer
    x = 5,217.75

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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.