Home / 28,857.72-39,823.74-16,282.20

Finding the Fourth Proportional to 28,857.72, 39,823.74 and 16,282.20

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Solution

The fourth proportional to 28,857.72, 39,823.74 and 16,282.20 is: 22,469.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,857.72 : 39,823.74 = 16,282.20 : x
  2. Step 2: Convert to fraction form
    28,857.72/39,823.74 = 16,282.20/x
  3. Step 3: Cross multiply
    28,857.72x = 39,823.74 × 16,282.20
  4. Step 4: Simplify right side
    28,857.72x = 648,418,099.43
  5. Step 5: Solve for x
    x = 648,418,099.43/28,857.72
  6. Step 6: Final answer
    x = 22,469.48

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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.