Home / 21,432.09-29,576.44-12,000.66

Finding the Fourth Proportional to 21,432.09, 29,576.44 and 12,000.66

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Solution

The fourth proportional to 21,432.09, 29,576.44 and 12,000.66 is: 16,560.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,432.09 : 29,576.44 = 12,000.66 : x
  2. Step 2: Convert to fraction form
    21,432.09/29,576.44 = 12,000.66/x
  3. Step 3: Cross multiply
    21,432.09x = 29,576.44 × 12,000.66
  4. Step 4: Simplify right side
    21,432.09x = 354,936,704.54
  5. Step 5: Solve for x
    x = 354,936,704.54/21,432.09
  6. Step 6: Final answer
    x = 16,560.99

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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.