Home / 13,278.30-19,910.59-3,917.13

Finding the Fourth Proportional to 13,278.30, 19,910.59 and 3,917.13

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Solution

The fourth proportional to 13,278.30, 19,910.59 and 3,917.13 is: 5,873.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.30 : 19,910.59 = 3,917.13 : x
  2. Step 2: Convert to fraction form
    13,278.30/19,910.59 = 3,917.13/x
  3. Step 3: Cross multiply
    13,278.30x = 19,910.59 × 3,917.13
  4. Step 4: Simplify right side
    13,278.30x = 77,992,284.95
  5. Step 5: Solve for x
    x = 77,992,284.95/13,278.30
  6. Step 6: Final answer
    x = 5,873.66

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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.