Home / 12,862.26-19,293.35-8,447.78

Finding the Fourth Proportional to 12,862.26, 19,293.35 and 8,447.78

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Solution

The fourth proportional to 12,862.26, 19,293.35 and 8,447.78 is: 12,671.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,862.26 : 19,293.35 = 8,447.78 : x
  2. Step 2: Convert to fraction form
    12,862.26/19,293.35 = 8,447.78/x
  3. Step 3: Cross multiply
    12,862.26x = 19,293.35 × 8,447.78
  4. Step 4: Simplify right side
    12,862.26x = 162,985,982.26
  5. Step 5: Solve for x
    x = 162,985,982.26/12,862.26
  6. Step 6: Final answer
    x = 12,671.64

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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.