Home / 20,830.93-31,249.63-6,976.69

Finding the Fourth Proportional to 20,830.93, 31,249.63 and 6,976.69

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Solution

The fourth proportional to 20,830.93, 31,249.63 and 6,976.69 is: 10,466.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.93 : 31,249.63 = 6,976.69 : x
  2. Step 2: Convert to fraction form
    20,830.93/31,249.63 = 6,976.69/x
  3. Step 3: Cross multiply
    20,830.93x = 31,249.63 × 6,976.69
  4. Step 4: Simplify right side
    20,830.93x = 218,018,911.72
  5. Step 5: Solve for x
    x = 218,018,911.72/20,830.93
  6. Step 6: Final answer
    x = 10,466.12

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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.