Home / 38,857.09-53,622.69-21,861.34

Finding the Fourth Proportional to 38,857.09, 53,622.69 and 21,861.34

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Solution

The fourth proportional to 38,857.09, 53,622.69 and 21,861.34 is: 30,168.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,857.09 : 53,622.69 = 21,861.34 : x
  2. Step 2: Convert to fraction form
    38,857.09/53,622.69 = 21,861.34/x
  3. Step 3: Cross multiply
    38,857.09x = 53,622.69 × 21,861.34
  4. Step 4: Simplify right side
    38,857.09x = 1,172,263,857.80
  5. Step 5: Solve for x
    x = 1,172,263,857.80/38,857.09
  6. Step 6: Final answer
    x = 30,168.60

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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.