Home / 12,810.93-19,221.36-4,491.87

Finding the Fourth Proportional to 12,810.93, 19,221.36 and 4,491.87

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Solution

The fourth proportional to 12,810.93, 19,221.36 and 4,491.87 is: 6,739.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810.93 : 19,221.36 = 4,491.87 : x
  2. Step 2: Convert to fraction form
    12,810.93/19,221.36 = 4,491.87/x
  3. Step 3: Cross multiply
    12,810.93x = 19,221.36 × 4,491.87
  4. Step 4: Simplify right side
    12,810.93x = 86,339,850.34
  5. Step 5: Solve for x
    x = 86,339,850.34/12,810.93
  6. Step 6: Final answer
    x = 6,739.55

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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.