Home / 12,147.68-18,220.08-3,827.36

Finding the Fourth Proportional to 12,147.68, 18,220.08 and 3,827.36

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Solution

The fourth proportional to 12,147.68, 18,220.08 and 3,827.36 is: 5,740.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.68 : 18,220.08 = 3,827.36 : x
  2. Step 2: Convert to fraction form
    12,147.68/18,220.08 = 3,827.36/x
  3. Step 3: Cross multiply
    12,147.68x = 18,220.08 × 3,827.36
  4. Step 4: Simplify right side
    12,147.68x = 69,734,805.39
  5. Step 5: Solve for x
    x = 69,734,805.39/12,147.68
  6. Step 6: Final answer
    x = 5,740.59

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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.