Home / 20,566.62-30,669.32-20,379.51

Finding the Fourth Proportional to 20,566.62, 30,669.32 and 20,379.51

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Solution

The fourth proportional to 20,566.62, 30,669.32 and 20,379.51 is: 30,390.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.62 : 30,669.32 = 20,379.51 : x
  2. Step 2: Convert to fraction form
    20,566.62/30,669.32 = 20,379.51/x
  3. Step 3: Cross multiply
    20,566.62x = 30,669.32 × 20,379.51
  4. Step 4: Simplify right side
    20,566.62x = 625,025,611.74
  5. Step 5: Solve for x
    x = 625,025,611.74/20,566.62
  6. Step 6: Final answer
    x = 30,390.29

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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.