Home / 20,668.48-30,994.74-8,814.76

Finding the Fourth Proportional to 20,668.48, 30,994.74 and 8,814.76

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Solution

The fourth proportional to 20,668.48, 30,994.74 and 8,814.76 is: 13,218.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.48 : 30,994.74 = 8,814.76 : x
  2. Step 2: Convert to fraction form
    20,668.48/30,994.74 = 8,814.76/x
  3. Step 3: Cross multiply
    20,668.48x = 30,994.74 × 8,814.76
  4. Step 4: Simplify right side
    20,668.48x = 273,211,194.36
  5. Step 5: Solve for x
    x = 273,211,194.36/20,668.48
  6. Step 6: Final answer
    x = 13,218.74

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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.