Home / 21,322.44-31,986.36-7,285.14

Finding the Fourth Proportional to 21,322.44, 31,986.36 and 7,285.14

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Solution

The fourth proportional to 21,322.44, 31,986.36 and 7,285.14 is: 10,928.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.44 : 31,986.36 = 7,285.14 : x
  2. Step 2: Convert to fraction form
    21,322.44/31,986.36 = 7,285.14/x
  3. Step 3: Cross multiply
    21,322.44x = 31,986.36 × 7,285.14
  4. Step 4: Simplify right side
    21,322.44x = 233,025,110.69
  5. Step 5: Solve for x
    x = 233,025,110.69/21,322.44
  6. Step 6: Final answer
    x = 10,928.63

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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.