Home / 13,947.52-19,245.96-7,979.92

Finding the Fourth Proportional to 13,947.52, 19,245.96 and 7,979.92

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Solution

The fourth proportional to 13,947.52, 19,245.96 and 7,979.92 is: 11,011.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.52 : 19,245.96 = 7,979.92 : x
  2. Step 2: Convert to fraction form
    13,947.52/19,245.96 = 7,979.92/x
  3. Step 3: Cross multiply
    13,947.52x = 19,245.96 × 7,979.92
  4. Step 4: Simplify right side
    13,947.52x = 153,581,221.12
  5. Step 5: Solve for x
    x = 153,581,221.12/13,947.52
  6. Step 6: Final answer
    x = 11,011.36

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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.