Home / 13,979.22-19,291.21-7,930.61

Finding the Fourth Proportional to 13,979.22, 19,291.21 and 7,930.61

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Solution

The fourth proportional to 13,979.22, 19,291.21 and 7,930.61 is: 10,944.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.22 : 19,291.21 = 7,930.61 : x
  2. Step 2: Convert to fraction form
    13,979.22/19,291.21 = 7,930.61/x
  3. Step 3: Cross multiply
    13,979.22x = 19,291.21 × 7,930.61
  4. Step 4: Simplify right side
    13,979.22x = 152,991,062.94
  5. Step 5: Solve for x
    x = 152,991,062.94/13,979.22
  6. Step 6: Final answer
    x = 10,944.18

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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.