Home / 27,421.80-37,790.22-19,855.32

Finding the Fourth Proportional to 27,421.80, 37,790.22 and 19,855.32

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Solution

The fourth proportional to 27,421.80, 37,790.22 and 19,855.32 is: 27,362.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,421.80 : 37,790.22 = 19,855.32 : x
  2. Step 2: Convert to fraction form
    27,421.80/37,790.22 = 19,855.32/x
  3. Step 3: Cross multiply
    27,421.80x = 37,790.22 × 19,855.32
  4. Step 4: Simplify right side
    27,421.80x = 750,336,910.97
  5. Step 5: Solve for x
    x = 750,336,910.97/27,421.80
  6. Step 6: Final answer
    x = 27,362.79

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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.