Home / 20,653.73-31,092.98-18,816.65

Finding the Fourth Proportional to 20,653.73, 31,092.98 and 18,816.65

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Solution

The fourth proportional to 20,653.73, 31,092.98 and 18,816.65 is: 28,327.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.73 : 31,092.98 = 18,816.65 : x
  2. Step 2: Convert to fraction form
    20,653.73/31,092.98 = 18,816.65/x
  3. Step 3: Cross multiply
    20,653.73x = 31,092.98 × 18,816.65
  4. Step 4: Simplify right side
    20,653.73x = 585,065,613.69
  5. Step 5: Solve for x
    x = 585,065,613.69/20,653.73
  6. Step 6: Final answer
    x = 28,327.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.