Home / 12,890.54-19,335.46-4,125.33

Finding the Fourth Proportional to 12,890.54, 19,335.46 and 4,125.33

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Solution

The fourth proportional to 12,890.54, 19,335.46 and 4,125.33 is: 6,187.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.54 : 19,335.46 = 4,125.33 : x
  2. Step 2: Convert to fraction form
    12,890.54/19,335.46 = 4,125.33/x
  3. Step 3: Cross multiply
    12,890.54x = 19,335.46 × 4,125.33
  4. Step 4: Simplify right side
    12,890.54x = 79,765,153.20
  5. Step 5: Solve for x
    x = 79,765,153.20/12,890.54
  6. Step 6: Final answer
    x = 6,187.88

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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.