Home / 20,750.07-30,992.78-18,772.65

Finding the Fourth Proportional to 20,750.07, 30,992.78 and 18,772.65

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Solution

The fourth proportional to 20,750.07, 30,992.78 and 18,772.65 is: 28,039.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.07 : 30,992.78 = 18,772.65 : x
  2. Step 2: Convert to fraction form
    20,750.07/30,992.78 = 18,772.65/x
  3. Step 3: Cross multiply
    20,750.07x = 30,992.78 × 18,772.65
  4. Step 4: Simplify right side
    20,750.07x = 581,816,611.47
  5. Step 5: Solve for x
    x = 581,816,611.47/20,750.07
  6. Step 6: Final answer
    x = 28,039.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.