Home / 12,945.80-19,405.62-5,043.38

Finding the Fourth Proportional to 12,945.80, 19,405.62 and 5,043.38

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Solution

The fourth proportional to 12,945.80, 19,405.62 and 5,043.38 is: 7,559.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.80 : 19,405.62 = 5,043.38 : x
  2. Step 2: Convert to fraction form
    12,945.80/19,405.62 = 5,043.38/x
  3. Step 3: Cross multiply
    12,945.80x = 19,405.62 × 5,043.38
  4. Step 4: Simplify right side
    12,945.80x = 97,869,818.77
  5. Step 5: Solve for x
    x = 97,869,818.77/12,945.80
  6. Step 6: Final answer
    x = 7,559.97

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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.