Home / 28,469.10-39,288.30-16,531.72

Finding the Fourth Proportional to 28,469.10, 39,288.30 and 16,531.72

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Solution

The fourth proportional to 28,469.10, 39,288.30 and 16,531.72 is: 22,814.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,469.10 : 39,288.30 = 16,531.72 : x
  2. Step 2: Convert to fraction form
    28,469.10/39,288.30 = 16,531.72/x
  3. Step 3: Cross multiply
    28,469.10x = 39,288.30 × 16,531.72
  4. Step 4: Simplify right side
    28,469.10x = 649,503,174.88
  5. Step 5: Solve for x
    x = 649,503,174.88/28,469.10
  6. Step 6: Final answer
    x = 22,814.32

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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.