Home / 12,655.36-18,984.85-3,891.01

Finding the Fourth Proportional to 12,655.36, 18,984.85 and 3,891.01

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Solution

The fourth proportional to 12,655.36, 18,984.85 and 3,891.01 is: 5,837.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.36 : 18,984.85 = 3,891.01 : x
  2. Step 2: Convert to fraction form
    12,655.36/18,984.85 = 3,891.01/x
  3. Step 3: Cross multiply
    12,655.36x = 18,984.85 × 3,891.01
  4. Step 4: Simplify right side
    12,655.36x = 73,870,136.55
  5. Step 5: Solve for x
    x = 73,870,136.55/12,655.36
  6. Step 6: Final answer
    x = 5,837.07

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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.