Home / 20,427.19-28,189.82-12,468.33

Finding the Fourth Proportional to 20,427.19, 28,189.82 and 12,468.33

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Solution

The fourth proportional to 20,427.19, 28,189.82 and 12,468.33 is: 17,206.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.19 : 28,189.82 = 12,468.33 : x
  2. Step 2: Convert to fraction form
    20,427.19/28,189.82 = 12,468.33/x
  3. Step 3: Cross multiply
    20,427.19x = 28,189.82 × 12,468.33
  4. Step 4: Simplify right side
    20,427.19x = 351,480,009.57
  5. Step 5: Solve for x
    x = 351,480,009.57/20,427.19
  6. Step 6: Final answer
    x = 17,206.48

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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.