Home / 19,977.40-29,955.30-8,291.80

Finding the Fourth Proportional to 19,977.40, 29,955.30 and 8,291.80

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Solution

The fourth proportional to 19,977.40, 29,955.30 and 8,291.80 is: 12,433.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,977.40 : 29,955.30 = 8,291.80 : x
  2. Step 2: Convert to fraction form
    19,977.40/29,955.30 = 8,291.80/x
  3. Step 3: Cross multiply
    19,977.40x = 29,955.30 × 8,291.80
  4. Step 4: Simplify right side
    19,977.40x = 248,383,356.54
  5. Step 5: Solve for x
    x = 248,383,356.54/19,977.40
  6. Step 6: Final answer
    x = 12,433.22

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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.