Home / 21,328.56-31,996.44-7,287.60

Finding the Fourth Proportional to 21,328.56, 31,996.44 and 7,287.60

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Solution

The fourth proportional to 21,328.56, 31,996.44 and 7,287.60 is: 10,932.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.56 : 31,996.44 = 7,287.60 : x
  2. Step 2: Convert to fraction form
    21,328.56/31,996.44 = 7,287.60/x
  3. Step 3: Cross multiply
    21,328.56x = 31,996.44 × 7,287.60
  4. Step 4: Simplify right side
    21,328.56x = 233,177,256.14
  5. Step 5: Solve for x
    x = 233,177,256.14/21,328.56
  6. Step 6: Final answer
    x = 10,932.63

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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.