Home / 21,361.47-29,480.20-11,930.03

Finding the Fourth Proportional to 21,361.47, 29,480.20 and 11,930.03

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Solution

The fourth proportional to 21,361.47, 29,480.20 and 11,930.03 is: 16,464.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,361.47 : 29,480.20 = 11,930.03 : x
  2. Step 2: Convert to fraction form
    21,361.47/29,480.20 = 11,930.03/x
  3. Step 3: Cross multiply
    21,361.47x = 29,480.20 × 11,930.03
  4. Step 4: Simplify right side
    21,361.47x = 351,699,684.46
  5. Step 5: Solve for x
    x = 351,699,684.46/21,361.47
  6. Step 6: Final answer
    x = 16,464.21

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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.