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Finding the Fourth Proportional to 28,859.52, 39,819.24 and 16,284.30

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Solution

The fourth proportional to 28,859.52, 39,819.24 and 16,284.30 is: 22,468.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,859.52 : 39,819.24 = 16,284.30 : x
  2. Step 2: Convert to fraction form
    28,859.52/39,819.24 = 16,284.30/x
  3. Step 3: Cross multiply
    28,859.52x = 39,819.24 × 16,284.30
  4. Step 4: Simplify right side
    28,859.52x = 648,428,449.93
  5. Step 5: Solve for x
    x = 648,428,449.93/28,859.52
  6. Step 6: Final answer
    x = 22,468.44

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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.