Home / 28,910.96-39,882.84-19,967.60

Finding the Fourth Proportional to 28,910.96, 39,882.84 and 19,967.60

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Solution

The fourth proportional to 28,910.96, 39,882.84 and 19,967.60 is: 27,545.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,910.96 : 39,882.84 = 19,967.60 : x
  2. Step 2: Convert to fraction form
    28,910.96/39,882.84 = 19,967.60/x
  3. Step 3: Cross multiply
    28,910.96x = 39,882.84 × 19,967.60
  4. Step 4: Simplify right side
    28,910.96x = 796,364,595.98
  5. Step 5: Solve for x
    x = 796,364,595.98/28,910.96
  6. Step 6: Final answer
    x = 27,545.42

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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.