Home / 33,128.31-45,732-21,803.75

Finding the Fourth Proportional to 33,128.31, 45,732 and 21,803.75

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Solution

The fourth proportional to 33,128.31, 45,732 and 21,803.75 is: 30,099.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,128.31 : 45,732 = 21,803.75 : x
  2. Step 2: Convert to fraction form
    33,128.31/45,732 = 21,803.75/x
  3. Step 3: Cross multiply
    33,128.31x = 45,732 × 21,803.75
  4. Step 4: Simplify right side
    33,128.31x = 997,129,095
  5. Step 5: Solve for x
    x = 997,129,095/33,128.31
  6. Step 6: Final answer
    x = 30,099.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.