Home / 12,208.31-18,313.80-3,886.37

Finding the Fourth Proportional to 12,208.31, 18,313.80 and 3,886.37

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Solution

The fourth proportional to 12,208.31, 18,313.80 and 3,886.37 is: 5,829.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,208.31 : 18,313.80 = 3,886.37 : x
  2. Step 2: Convert to fraction form
    12,208.31/18,313.80 = 3,886.37/x
  3. Step 3: Cross multiply
    12,208.31x = 18,313.80 × 3,886.37
  4. Step 4: Simplify right side
    12,208.31x = 71,174,280.17
  5. Step 5: Solve for x
    x = 71,174,280.17/12,208.31
  6. Step 6: Final answer
    x = 5,829.99

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1.5x scale

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.