Home / 12,681.12-19,022.22-3,921.96

Finding the Fourth Proportional to 12,681.12, 19,022.22 and 3,921.96

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Solution

The fourth proportional to 12,681.12, 19,022.22 and 3,921.96 is: 5,883.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.12 : 19,022.22 = 3,921.96 : x
  2. Step 2: Convert to fraction form
    12,681.12/19,022.22 = 3,921.96/x
  3. Step 3: Cross multiply
    12,681.12x = 19,022.22 × 3,921.96
  4. Step 4: Simplify right side
    12,681.12x = 74,604,385.95
  5. Step 5: Solve for x
    x = 74,604,385.95/12,681.12
  6. Step 6: Final answer
    x = 5,883.11

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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.