Home / 20,555.91-30,814.97-7,405.07

Finding the Fourth Proportional to 20,555.91, 30,814.97 and 7,405.07

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Solution

The fourth proportional to 20,555.91, 30,814.97 and 7,405.07 is: 11,100.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,555.91 : 30,814.97 = 7,405.07 : x
  2. Step 2: Convert to fraction form
    20,555.91/30,814.97 = 7,405.07/x
  3. Step 3: Cross multiply
    20,555.91x = 30,814.97 × 7,405.07
  4. Step 4: Simplify right side
    20,555.91x = 228,186,923.60
  5. Step 5: Solve for x
    x = 228,186,923.60/20,555.91
  6. Step 6: Final answer
    x = 11,100.79

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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.