Home / 20,427.06-30,643.47-7,275.54

Finding the Fourth Proportional to 20,427.06, 30,643.47 and 7,275.54

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Solution

The fourth proportional to 20,427.06, 30,643.47 and 7,275.54 is: 10,914.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.06 : 30,643.47 = 7,275.54 : x
  2. Step 2: Convert to fraction form
    20,427.06/30,643.47 = 7,275.54/x
  3. Step 3: Cross multiply
    20,427.06x = 30,643.47 × 7,275.54
  4. Step 4: Simplify right side
    20,427.06x = 222,947,791.72
  5. Step 5: Solve for x
    x = 222,947,791.72/20,427.06
  6. Step 6: Final answer
    x = 10,914.34

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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.