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Finding the Fourth Proportional to 28,709.09, 43,045.11 and 13,708.09

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Solution

The fourth proportional to 28,709.09, 43,045.11 and 13,708.09 is: 20,553.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,709.09 : 43,045.11 = 13,708.09 : x
  2. Step 2: Convert to fraction form
    28,709.09/43,045.11 = 13,708.09/x
  3. Step 3: Cross multiply
    28,709.09x = 43,045.11 × 13,708.09
  4. Step 4: Simplify right side
    28,709.09x = 590,066,241.94
  5. Step 5: Solve for x
    x = 590,066,241.94/28,709.09
  6. Step 6: Final answer
    x = 20,553.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.