Home / 13,947.39-19,247.73-7,979.61

Finding the Fourth Proportional to 13,947.39, 19,247.73 and 7,979.61

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Solution

The fourth proportional to 13,947.39, 19,247.73 and 7,979.61 is: 11,012.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.39 : 19,247.73 = 7,979.61 : x
  2. Step 2: Convert to fraction form
    13,947.39/19,247.73 = 7,979.61/x
  3. Step 3: Cross multiply
    13,947.39x = 19,247.73 × 7,979.61
  4. Step 4: Simplify right side
    13,947.39x = 153,589,421.04
  5. Step 5: Solve for x
    x = 153,589,421.04/13,947.39
  6. Step 6: Final answer
    x = 11,012.05

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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.