Home / 30,289.82-41,816.35-21,242.96

Finding the Fourth Proportional to 30,289.82, 41,816.35 and 21,242.96

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Solution

The fourth proportional to 30,289.82, 41,816.35 and 21,242.96 is: 29,326.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,289.82 : 41,816.35 = 21,242.96 : x
  2. Step 2: Convert to fraction form
    30,289.82/41,816.35 = 21,242.96/x
  3. Step 3: Cross multiply
    30,289.82x = 41,816.35 × 21,242.96
  4. Step 4: Simplify right side
    30,289.82x = 888,303,024.68
  5. Step 5: Solve for x
    x = 888,303,024.68/30,289.82
  6. Step 6: Final answer
    x = 29,326.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.