Home / 38,855.88-53,618.92-21,860.84

Finding the Fourth Proportional to 38,855.88, 53,618.92 and 21,860.84

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Solution

The fourth proportional to 38,855.88, 53,618.92 and 21,860.84 is: 30,166.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,855.88 : 53,618.92 = 21,860.84 : x
  2. Step 2: Convert to fraction form
    38,855.88/53,618.92 = 21,860.84/x
  3. Step 3: Cross multiply
    38,855.88x = 53,618.92 × 21,860.84
  4. Step 4: Simplify right side
    38,855.88x = 1,172,154,631.09
  5. Step 5: Solve for x
    x = 1,172,154,631.09/38,855.88
  6. Step 6: Final answer
    x = 30,166.72

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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.