Home / 20,590.23-30,880.62-12,272.61

Finding the Fourth Proportional to 20,590.23, 30,880.62 and 12,272.61

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Solution

The fourth proportional to 20,590.23, 30,880.62 and 12,272.61 is: 18,406.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590.23 : 30,880.62 = 12,272.61 : x
  2. Step 2: Convert to fraction form
    20,590.23/30,880.62 = 12,272.61/x
  3. Step 3: Cross multiply
    20,590.23x = 30,880.62 × 12,272.61
  4. Step 4: Simplify right side
    20,590.23x = 378,985,805.82
  5. Step 5: Solve for x
    x = 378,985,805.82/20,590.23
  6. Step 6: Final answer
    x = 18,406.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.