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Finding the Fourth Proportional to 28,854.56, 39,819.13 and 16,107.01

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Solution

The fourth proportional to 28,854.56, 39,819.13 and 16,107.01 is: 22,227.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,854.56 : 39,819.13 = 16,107.01 : x
  2. Step 2: Convert to fraction form
    28,854.56/39,819.13 = 16,107.01/x
  3. Step 3: Cross multiply
    28,854.56x = 39,819.13 × 16,107.01
  4. Step 4: Simplify right side
    28,854.56x = 641,366,845.47
  5. Step 5: Solve for x
    x = 641,366,845.47/28,854.56
  6. Step 6: Final answer
    x = 22,227.57

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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.