Home / 13,012.55-19,518.87-3,151.81

Finding the Fourth Proportional to 13,012.55, 19,518.87 and 3,151.81

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Solution

The fourth proportional to 13,012.55, 19,518.87 and 3,151.81 is: 4,727.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,012.55 : 19,518.87 = 3,151.81 : x
  2. Step 2: Convert to fraction form
    13,012.55/19,518.87 = 3,151.81/x
  3. Step 3: Cross multiply
    13,012.55x = 19,518.87 × 3,151.81
  4. Step 4: Simplify right side
    13,012.55x = 61,519,769.65
  5. Step 5: Solve for x
    x = 61,519,769.65/13,012.55
  6. Step 6: Final answer
    x = 4,727.73

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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.