Home / 38,855.09-53,619.93-21,859.34

Finding the Fourth Proportional to 38,855.09, 53,619.93 and 21,859.34

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Solution

The fourth proportional to 38,855.09, 53,619.93 and 21,859.34 is: 30,165.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,855.09 : 53,619.93 = 21,859.34 : x
  2. Step 2: Convert to fraction form
    38,855.09/53,619.93 = 21,859.34/x
  3. Step 3: Cross multiply
    38,855.09x = 53,619.93 × 21,859.34
  4. Step 4: Simplify right side
    38,855.09x = 1,172,096,012.55
  5. Step 5: Solve for x
    x = 1,172,096,012.55/38,855.09
  6. Step 6: Final answer
    x = 30,165.83

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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.