Home / 21,391.75-32,102.34-7,540.75

Finding the Fourth Proportional to 21,391.75, 32,102.34 and 7,540.75

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Solution

The fourth proportional to 21,391.75, 32,102.34 and 7,540.75 is: 11,316.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,391.75 : 32,102.34 = 7,540.75 : x
  2. Step 2: Convert to fraction form
    21,391.75/32,102.34 = 7,540.75/x
  3. Step 3: Cross multiply
    21,391.75x = 32,102.34 × 7,540.75
  4. Step 4: Simplify right side
    21,391.75x = 242,075,720.36
  5. Step 5: Solve for x
    x = 242,075,720.36/21,391.75
  6. Step 6: Final answer
    x = 11,316.31

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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.