Home / 21,576.04-29,775.66-11,885.06

Finding the Fourth Proportional to 21,576.04, 29,775.66 and 11,885.06

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Solution

The fourth proportional to 21,576.04, 29,775.66 and 11,885.06 is: 16,401.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,576.04 : 29,775.66 = 11,885.06 : x
  2. Step 2: Convert to fraction form
    21,576.04/29,775.66 = 11,885.06/x
  3. Step 3: Cross multiply
    21,576.04x = 29,775.66 × 11,885.06
  4. Step 4: Simplify right side
    21,576.04x = 353,885,505.64
  5. Step 5: Solve for x
    x = 353,885,505.64/21,576.04
  6. Step 6: Final answer
    x = 16,401.78

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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.