Home / 20,338.54-28,067.19-11,386.06

Finding the Fourth Proportional to 20,338.54, 28,067.19 and 11,386.06

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Solution

The fourth proportional to 20,338.54, 28,067.19 and 11,386.06 is: 15,712.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,338.54 : 28,067.19 = 11,386.06 : x
  2. Step 2: Convert to fraction form
    20,338.54/28,067.19 = 11,386.06/x
  3. Step 3: Cross multiply
    20,338.54x = 28,067.19 × 11,386.06
  4. Step 4: Simplify right side
    20,338.54x = 319,574,709.37
  5. Step 5: Solve for x
    x = 319,574,709.37/20,338.54
  6. Step 6: Final answer
    x = 15,712.77

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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.