Home / 20,203.90-30,297.75-11,886.10

Finding the Fourth Proportional to 20,203.90, 30,297.75 and 11,886.10

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Solution

The fourth proportional to 20,203.90, 30,297.75 and 11,886.10 is: 17,824.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,203.90 : 30,297.75 = 11,886.10 : x
  2. Step 2: Convert to fraction form
    20,203.90/30,297.75 = 11,886.10/x
  3. Step 3: Cross multiply
    20,203.90x = 30,297.75 × 11,886.10
  4. Step 4: Simplify right side
    20,203.90x = 360,122,086.28
  5. Step 5: Solve for x
    x = 360,122,086.28/20,203.90
  6. Step 6: Final answer
    x = 17,824.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.