Home / 12,947.23-17,865.61-7,203.33

Finding the Fourth Proportional to 12,947.23, 17,865.61 and 7,203.33

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Solution

The fourth proportional to 12,947.23, 17,865.61 and 7,203.33 is: 9,939.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947.23 : 17,865.61 = 7,203.33 : x
  2. Step 2: Convert to fraction form
    12,947.23/17,865.61 = 7,203.33/x
  3. Step 3: Cross multiply
    12,947.23x = 17,865.61 × 7,203.33
  4. Step 4: Simplify right side
    12,947.23x = 128,691,759.14
  5. Step 5: Solve for x
    x = 128,691,759.14/12,947.23
  6. Step 6: Final answer
    x = 9,939.71

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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.