Home / 39,899.07-55,060.89-21,993.69

Finding the Fourth Proportional to 39,899.07, 55,060.89 and 21,993.69

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Solution

The fourth proportional to 39,899.07, 55,060.89 and 21,993.69 is: 30,351.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,899.07 : 55,060.89 = 21,993.69 : x
  2. Step 2: Convert to fraction form
    39,899.07/55,060.89 = 21,993.69/x
  3. Step 3: Cross multiply
    39,899.07x = 55,060.89 × 21,993.69
  4. Step 4: Simplify right side
    39,899.07x = 1,210,992,145.78
  5. Step 5: Solve for x
    x = 1,210,992,145.78/39,899.07
  6. Step 6: Final answer
    x = 30,351.39

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Double scale
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Similar ratio
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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.