Home / 28,436.85-42,662.30-12,850.29

Finding the Fourth Proportional to 28,436.85, 42,662.30 and 12,850.29

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Solution

The fourth proportional to 28,436.85, 42,662.30 and 12,850.29 is: 19,278.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,436.85 : 42,662.30 = 12,850.29 : x
  2. Step 2: Convert to fraction form
    28,436.85/42,662.30 = 12,850.29/x
  3. Step 3: Cross multiply
    28,436.85x = 42,662.30 × 12,850.29
  4. Step 4: Simplify right side
    28,436.85x = 548,222,862.82
  5. Step 5: Solve for x
    x = 548,222,862.82/28,436.85
  6. Step 6: Final answer
    x = 19,278.61

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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.