Home / 20,680.86-31,021.48-5,889.77

Finding the Fourth Proportional to 20,680.86, 31,021.48 and 5,889.77

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Solution

The fourth proportional to 20,680.86, 31,021.48 and 5,889.77 is: 8,834.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.86 : 31,021.48 = 5,889.77 : x
  2. Step 2: Convert to fraction form
    20,680.86/31,021.48 = 5,889.77/x
  3. Step 3: Cross multiply
    20,680.86x = 31,021.48 × 5,889.77
  4. Step 4: Simplify right side
    20,680.86x = 182,709,382.26
  5. Step 5: Solve for x
    x = 182,709,382.26/20,680.86
  6. Step 6: Final answer
    x = 8,834.71

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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.