Home / 20,502.69-28,293.81-11,550.33

Finding the Fourth Proportional to 20,502.69, 28,293.81 and 11,550.33

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Solution

The fourth proportional to 20,502.69, 28,293.81 and 11,550.33 is: 15,939.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.69 : 28,293.81 = 11,550.33 : x
  2. Step 2: Convert to fraction form
    20,502.69/28,293.81 = 11,550.33/x
  3. Step 3: Cross multiply
    20,502.69x = 28,293.81 × 11,550.33
  4. Step 4: Simplify right side
    20,502.69x = 326,802,799.14
  5. Step 5: Solve for x
    x = 326,802,799.14/20,502.69
  6. Step 6: Final answer
    x = 15,939.51

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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.