Home / 21,297.36-29,361.68-14,915.36

Finding the Fourth Proportional to 21,297.36, 29,361.68 and 14,915.36

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Solution

The fourth proportional to 21,297.36, 29,361.68 and 14,915.36 is: 20,563.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,297.36 : 29,361.68 = 14,915.36 : x
  2. Step 2: Convert to fraction form
    21,297.36/29,361.68 = 14,915.36/x
  3. Step 3: Cross multiply
    21,297.36x = 29,361.68 × 14,915.36
  4. Step 4: Simplify right side
    21,297.36x = 437,940,027.40
  5. Step 5: Solve for x
    x = 437,940,027.40/21,297.36
  6. Step 6: Final answer
    x = 20,563.11

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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.