Home / 28,439.08-39,242.82-20,041

Finding the Fourth Proportional to 28,439.08, 39,242.82 and 20,041

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Solution

The fourth proportional to 28,439.08, 39,242.82 and 20,041 is: 27,654.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,439.08 : 39,242.82 = 20,041 : x
  2. Step 2: Convert to fraction form
    28,439.08/39,242.82 = 20,041/x
  3. Step 3: Cross multiply
    28,439.08x = 39,242.82 × 20,041
  4. Step 4: Simplify right side
    28,439.08x = 786,465,355.62
  5. Step 5: Solve for x
    x = 786,465,355.62/28,439.08
  6. Step 6: Final answer
    x = 27,654.39

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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.