Home / 38,855.39-53,619.21-21,860.55

Finding the Fourth Proportional to 38,855.39, 53,619.21 and 21,860.55

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Solution

The fourth proportional to 38,855.39, 53,619.21 and 21,860.55 is: 30,166.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,855.39 : 53,619.21 = 21,860.55 : x
  2. Step 2: Convert to fraction form
    38,855.39/53,619.21 = 21,860.55/x
  3. Step 3: Cross multiply
    38,855.39x = 53,619.21 × 21,860.55
  4. Step 4: Simplify right side
    38,855.39x = 1,172,145,421.17
  5. Step 5: Solve for x
    x = 1,172,145,421.17/38,855.39
  6. Step 6: Final answer
    x = 30,166.87

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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.