Home / 19,840.20-27,380.33-11,880.90

Finding the Fourth Proportional to 19,840.20, 27,380.33 and 11,880.90

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Solution

The fourth proportional to 19,840.20, 27,380.33 and 11,880.90 is: 16,396.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,840.20 : 27,380.33 = 11,880.90 : x
  2. Step 2: Convert to fraction form
    19,840.20/27,380.33 = 11,880.90/x
  3. Step 3: Cross multiply
    19,840.20x = 27,380.33 × 11,880.90
  4. Step 4: Simplify right side
    19,840.20x = 325,302,962.70
  5. Step 5: Solve for x
    x = 325,302,962.70/19,840.20
  6. Step 6: Final answer
    x = 16,396.15

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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.