Home / 39,979.37-59,958.60-11,891.86

Finding the Fourth Proportional to 39,979.37, 59,958.60 and 11,891.86

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Solution

The fourth proportional to 39,979.37, 59,958.60 and 11,891.86 is: 17,834.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,979.37 : 59,958.60 = 11,891.86 : x
  2. Step 2: Convert to fraction form
    39,979.37/59,958.60 = 11,891.86/x
  3. Step 3: Cross multiply
    39,979.37x = 59,958.60 × 11,891.86
  4. Step 4: Simplify right side
    39,979.37x = 713,019,419.77
  5. Step 5: Solve for x
    x = 713,019,419.77/39,979.37
  6. Step 6: Final answer
    x = 17,834.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.