Home / 19,641.86-27,115.81-15,155.54

Finding the Fourth Proportional to 19,641.86, 27,115.81 and 15,155.54

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Solution

The fourth proportional to 19,641.86, 27,115.81 and 15,155.54 is: 20,922.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,641.86 : 27,115.81 = 15,155.54 : x
  2. Step 2: Convert to fraction form
    19,641.86/27,115.81 = 15,155.54/x
  3. Step 3: Cross multiply
    19,641.86x = 27,115.81 × 15,155.54
  4. Step 4: Simplify right side
    19,641.86x = 410,954,743.09
  5. Step 5: Solve for x
    x = 410,954,743.09/19,641.86
  6. Step 6: Final answer
    x = 20,922.39

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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.