Home / 21,977.56-32,968.36-7,186.55

Finding the Fourth Proportional to 21,977.56, 32,968.36 and 7,186.55

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Solution

The fourth proportional to 21,977.56, 32,968.36 and 7,186.55 is: 10,780.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.56 : 32,968.36 = 7,186.55 : x
  2. Step 2: Convert to fraction form
    21,977.56/32,968.36 = 7,186.55/x
  3. Step 3: Cross multiply
    21,977.56x = 32,968.36 × 7,186.55
  4. Step 4: Simplify right side
    21,977.56x = 236,928,858.96
  5. Step 5: Solve for x
    x = 236,928,858.96/21,977.56
  6. Step 6: Final answer
    x = 10,780.49

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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.