Home / 20,203.78-30,297.56-11,885.98

Finding the Fourth Proportional to 20,203.78, 30,297.56 and 11,885.98

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Solution

The fourth proportional to 20,203.78, 30,297.56 and 11,885.98 is: 17,824.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,203.78 : 30,297.56 = 11,885.98 : x
  2. Step 2: Convert to fraction form
    20,203.78/30,297.56 = 11,885.98/x
  3. Step 3: Cross multiply
    20,203.78x = 30,297.56 × 11,885.98
  4. Step 4: Simplify right side
    20,203.78x = 360,116,192.21
  5. Step 5: Solve for x
    x = 360,116,192.21/20,203.78
  6. Step 6: Final answer
    x = 17,824.20

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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.