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Finding the Fourth Proportional to 28,797.68, 39,741.72 and 16,223.60

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Solution

The fourth proportional to 28,797.68, 39,741.72 and 16,223.60 is: 22,389.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,797.68 : 39,741.72 = 16,223.60 : x
  2. Step 2: Convert to fraction form
    28,797.68/39,741.72 = 16,223.60/x
  3. Step 3: Cross multiply
    28,797.68x = 39,741.72 × 16,223.60
  4. Step 4: Simplify right side
    28,797.68x = 644,753,768.59
  5. Step 5: Solve for x
    x = 644,753,768.59/28,797.68
  6. Step 6: Final answer
    x = 22,389.09

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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.