Home / 20,266.86-30,379.64-7,783.68

Finding the Fourth Proportional to 20,266.86, 30,379.64 and 7,783.68

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Solution

The fourth proportional to 20,266.86, 30,379.64 and 7,783.68 is: 11,667.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,266.86 : 30,379.64 = 7,783.68 : x
  2. Step 2: Convert to fraction form
    20,266.86/30,379.64 = 7,783.68/x
  3. Step 3: Cross multiply
    20,266.86x = 30,379.64 × 7,783.68
  4. Step 4: Simplify right side
    20,266.86x = 236,465,357.36
  5. Step 5: Solve for x
    x = 236,465,357.36/20,266.86
  6. Step 6: Final answer
    x = 11,667.59

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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.