Home / 20,419.38-28,181.80-12,466.23

Finding the Fourth Proportional to 20,419.38, 28,181.80 and 12,466.23

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Solution

The fourth proportional to 20,419.38, 28,181.80 and 12,466.23 is: 17,205.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419.38 : 28,181.80 = 12,466.23 : x
  2. Step 2: Convert to fraction form
    20,419.38/28,181.80 = 12,466.23/x
  3. Step 3: Cross multiply
    20,419.38x = 28,181.80 × 12,466.23
  4. Step 4: Simplify right side
    20,419.38x = 351,320,769.45
  5. Step 5: Solve for x
    x = 351,320,769.45/20,419.38
  6. Step 6: Final answer
    x = 17,205.26

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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.