Home / 20,139.03-27,787.39-12,181.08

Finding the Fourth Proportional to 20,139.03, 27,787.39 and 12,181.08

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Solution

The fourth proportional to 20,139.03, 27,787.39 and 12,181.08 is: 16,807.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.03 : 27,787.39 = 12,181.08 : x
  2. Step 2: Convert to fraction form
    20,139.03/27,787.39 = 12,181.08/x
  3. Step 3: Cross multiply
    20,139.03x = 27,787.39 × 12,181.08
  4. Step 4: Simplify right side
    20,139.03x = 338,480,494.33
  5. Step 5: Solve for x
    x = 338,480,494.33/20,139.03
  6. Step 6: Final answer
    x = 16,807.19

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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.