Home / 12,756.57-19,137.58-5,357.22

Finding the Fourth Proportional to 12,756.57, 19,137.58 and 5,357.22

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Solution

The fourth proportional to 12,756.57, 19,137.58 and 5,357.22 is: 8,036.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,756.57 : 19,137.58 = 5,357.22 : x
  2. Step 2: Convert to fraction form
    12,756.57/19,137.58 = 5,357.22/x
  3. Step 3: Cross multiply
    12,756.57x = 19,137.58 × 5,357.22
  4. Step 4: Simplify right side
    12,756.57x = 102,524,141.17
  5. Step 5: Solve for x
    x = 102,524,141.17/12,756.57
  6. Step 6: Final answer
    x = 8,036.97

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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.