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Finding the Fourth Proportional to 28,945, 39,944.10 and 16,369.48

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Solution

The fourth proportional to 28,945, 39,944.10 and 16,369.48 is: 22,589.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,945 : 39,944.10 = 16,369.48 : x
  2. Step 2: Convert to fraction form
    28,945/39,944.10 = 16,369.48/x
  3. Step 3: Cross multiply
    28,945x = 39,944.10 × 16,369.48
  4. Step 4: Simplify right side
    28,945x = 653,864,146.07
  5. Step 5: Solve for x
    x = 653,864,146.07/28,945
  6. Step 6: Final answer
    x = 22,589.88

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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.