Home / 21,977.40-32,942.86-7,182.34

Finding the Fourth Proportional to 21,977.40, 32,942.86 and 7,182.34

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Solution

The fourth proportional to 21,977.40, 32,942.86 and 7,182.34 is: 10,765.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.40 : 32,942.86 = 7,182.34 : x
  2. Step 2: Convert to fraction form
    21,977.40/32,942.86 = 7,182.34/x
  3. Step 3: Cross multiply
    21,977.40x = 32,942.86 × 7,182.34
  4. Step 4: Simplify right side
    21,977.40x = 236,606,821.09
  5. Step 5: Solve for x
    x = 236,606,821.09/21,977.40
  6. Step 6: Final answer
    x = 10,765.92

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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.