Home / 21,354.21-29,467.28-11,792.57

Finding the Fourth Proportional to 21,354.21, 29,467.28 and 11,792.57

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Solution

The fourth proportional to 21,354.21, 29,467.28 and 11,792.57 is: 16,272.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,354.21 : 29,467.28 = 11,792.57 : x
  2. Step 2: Convert to fraction form
    21,354.21/29,467.28 = 11,792.57/x
  3. Step 3: Cross multiply
    21,354.21x = 29,467.28 × 11,792.57
  4. Step 4: Simplify right side
    21,354.21x = 347,494,755.81
  5. Step 5: Solve for x
    x = 347,494,755.81/21,354.21
  6. Step 6: Final answer
    x = 16,272.89

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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.