Home / 30,142.48-45,223.06-21,825.50

Finding the Fourth Proportional to 30,142.48, 45,223.06 and 21,825.50

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Solution

The fourth proportional to 30,142.48, 45,223.06 and 21,825.50 is: 32,745.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,142.48 : 45,223.06 = 21,825.50 : x
  2. Step 2: Convert to fraction form
    30,142.48/45,223.06 = 21,825.50/x
  3. Step 3: Cross multiply
    30,142.48x = 45,223.06 × 21,825.50
  4. Step 4: Simplify right side
    30,142.48x = 987,015,910.65
  5. Step 5: Solve for x
    x = 987,015,910.65/30,142.48
  6. Step 6: Final answer
    x = 32,745.01

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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.