Home / 20,571.48-30,858.84-7,425.18

Finding the Fourth Proportional to 20,571.48, 30,858.84 and 7,425.18

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Solution

The fourth proportional to 20,571.48, 30,858.84 and 7,425.18 is: 11,138.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.48 : 30,858.84 = 7,425.18 : x
  2. Step 2: Convert to fraction form
    20,571.48/30,858.84 = 7,425.18/x
  3. Step 3: Cross multiply
    20,571.48x = 30,858.84 × 7,425.18
  4. Step 4: Simplify right side
    20,571.48x = 229,132,441.59
  5. Step 5: Solve for x
    x = 229,132,441.59/20,571.48
  6. Step 6: Final answer
    x = 11,138.35

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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.