Home / 21,203.75-29,324.67-18,546.53

Finding the Fourth Proportional to 21,203.75, 29,324.67 and 18,546.53

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Solution

The fourth proportional to 21,203.75, 29,324.67 and 18,546.53 is: 25,649.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,203.75 : 29,324.67 = 18,546.53 : x
  2. Step 2: Convert to fraction form
    21,203.75/29,324.67 = 18,546.53/x
  3. Step 3: Cross multiply
    21,203.75x = 29,324.67 × 18,546.53
  4. Step 4: Simplify right side
    21,203.75x = 543,870,871.90
  5. Step 5: Solve for x
    x = 543,870,871.90/21,203.75
  6. Step 6: Final answer
    x = 25,649.75

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1.5x scale

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.