Home / 38,861.55-53,633.69-21,866.54

Finding the Fourth Proportional to 38,861.55, 53,633.69 and 21,866.54

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Solution

The fourth proportional to 38,861.55, 53,633.69 and 21,866.54 is: 30,178.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,861.55 : 53,633.69 = 21,866.54 : x
  2. Step 2: Convert to fraction form
    38,861.55/53,633.69 = 21,866.54/x
  3. Step 3: Cross multiply
    38,861.55x = 53,633.69 × 21,866.54
  4. Step 4: Simplify right side
    38,861.55x = 1,172,782,850.23
  5. Step 5: Solve for x
    x = 1,172,782,850.23/38,861.55
  6. Step 6: Final answer
    x = 30,178.49

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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.