Home / 21,431.88-29,576.90-12,000.52

Finding the Fourth Proportional to 21,431.88, 29,576.90 and 12,000.52

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Solution

The fourth proportional to 21,431.88, 29,576.90 and 12,000.52 is: 16,561.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.88 : 29,576.90 = 12,000.52 : x
  2. Step 2: Convert to fraction form
    21,431.88/29,576.90 = 12,000.52/x
  3. Step 3: Cross multiply
    21,431.88x = 29,576.90 × 12,000.52
  4. Step 4: Simplify right side
    21,431.88x = 354,938,179.99
  5. Step 5: Solve for x
    x = 354,938,179.99/21,431.88
  6. Step 6: Final answer
    x = 16,561.22

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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.