Home / 21,612.21-29,824.83-11,676.21

Finding the Fourth Proportional to 21,612.21, 29,824.83 and 11,676.21

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Solution

The fourth proportional to 21,612.21, 29,824.83 and 11,676.21 is: 16,113.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,612.21 : 29,824.83 = 11,676.21 : x
  2. Step 2: Convert to fraction form
    21,612.21/29,824.83 = 11,676.21/x
  3. Step 3: Cross multiply
    21,612.21x = 29,824.83 × 11,676.21
  4. Step 4: Simplify right side
    21,612.21x = 348,240,978.29
  5. Step 5: Solve for x
    x = 348,240,978.29/21,612.21
  6. Step 6: Final answer
    x = 16,113.16

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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.