Home / 13,947.14-19,245.86-7,977.85

Finding the Fourth Proportional to 13,947.14, 19,245.86 and 7,977.85

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Solution

The fourth proportional to 13,947.14, 19,245.86 and 7,977.85 is: 11,008.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.14 : 19,245.86 = 7,977.85 : x
  2. Step 2: Convert to fraction form
    13,947.14/19,245.86 = 7,977.85/x
  3. Step 3: Cross multiply
    13,947.14x = 19,245.86 × 7,977.85
  4. Step 4: Simplify right side
    13,947.14x = 153,540,584.20
  5. Step 5: Solve for x
    x = 153,540,584.20/13,947.14
  6. Step 6: Final answer
    x = 11,008.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.