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Finding the Fourth Proportional to 28,914.29, 39,900.90 and 16,167.49

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Solution

The fourth proportional to 28,914.29, 39,900.90 and 16,167.49 is: 22,310.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,914.29 : 39,900.90 = 16,167.49 : x
  2. Step 2: Convert to fraction form
    28,914.29/39,900.90 = 16,167.49/x
  3. Step 3: Cross multiply
    28,914.29x = 39,900.90 × 16,167.49
  4. Step 4: Simplify right side
    28,914.29x = 645,097,301.99
  5. Step 5: Solve for x
    x = 645,097,301.99/28,914.29
  6. Step 6: Final answer
    x = 22,310.68

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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.