Home / 15,032.09-20,696.78-13,238.33

Finding the Fourth Proportional to 15,032.09, 20,696.78 and 13,238.33

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Solution

The fourth proportional to 15,032.09, 20,696.78 and 13,238.33 is: 18,227.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,032.09 : 20,696.78 = 13,238.33 : x
  2. Step 2: Convert to fraction form
    15,032.09/20,696.78 = 13,238.33/x
  3. Step 3: Cross multiply
    15,032.09x = 20,696.78 × 13,238.33
  4. Step 4: Simplify right side
    15,032.09x = 273,990,849.61
  5. Step 5: Solve for x
    x = 273,990,849.61/15,032.09
  6. Step 6: Final answer
    x = 18,227.07

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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.