Home / 20,616.09-28,473.42-13,929.33

Finding the Fourth Proportional to 20,616.09, 28,473.42 and 13,929.33

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Solution

The fourth proportional to 20,616.09, 28,473.42 and 13,929.33 is: 19,238.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.09 : 28,473.42 = 13,929.33 : x
  2. Step 2: Convert to fraction form
    20,616.09/28,473.42 = 13,929.33/x
  3. Step 3: Cross multiply
    20,616.09x = 28,473.42 × 13,929.33
  4. Step 4: Simplify right side
    20,616.09x = 396,615,663.41
  5. Step 5: Solve for x
    x = 396,615,663.41/20,616.09
  6. Step 6: Final answer
    x = 19,238.16

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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.