Home / 20,339.03-28,067.56-11,386.54

Finding the Fourth Proportional to 20,339.03, 28,067.56 and 11,386.54

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Solution

The fourth proportional to 20,339.03, 28,067.56 and 11,386.54 is: 15,713.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,339.03 : 28,067.56 = 11,386.54 : x
  2. Step 2: Convert to fraction form
    20,339.03/28,067.56 = 11,386.54/x
  3. Step 3: Cross multiply
    20,339.03x = 28,067.56 × 11,386.54
  4. Step 4: Simplify right side
    20,339.03x = 319,592,254.30
  5. Step 5: Solve for x
    x = 319,592,254.30/20,339.03
  6. Step 6: Final answer
    x = 15,713.25

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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.