Home / 12,838.89-19,258.28-4,074.49

Finding the Fourth Proportional to 12,838.89, 19,258.28 and 4,074.49

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Solution

The fourth proportional to 12,838.89, 19,258.28 and 4,074.49 is: 6,111.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,838.89 : 19,258.28 = 4,074.49 : x
  2. Step 2: Convert to fraction form
    12,838.89/19,258.28 = 4,074.49/x
  3. Step 3: Cross multiply
    12,838.89x = 19,258.28 × 4,074.49
  4. Step 4: Simplify right side
    12,838.89x = 78,467,648.90
  5. Step 5: Solve for x
    x = 78,467,648.90/12,838.89
  6. Step 6: Final answer
    x = 6,111.72

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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.