Home / 12,148.31-18,222.47-3,383.45

Finding the Fourth Proportional to 12,148.31, 18,222.47 and 3,383.45

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Solution

The fourth proportional to 12,148.31, 18,222.47 and 3,383.45 is: 5,075.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,148.31 : 18,222.47 = 3,383.45 : x
  2. Step 2: Convert to fraction form
    12,148.31/18,222.47 = 3,383.45/x
  3. Step 3: Cross multiply
    12,148.31x = 18,222.47 × 3,383.45
  4. Step 4: Simplify right side
    12,148.31x = 61,654,891.62
  5. Step 5: Solve for x
    x = 61,654,891.62/12,148.31
  6. Step 6: Final answer
    x = 5,075.18

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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.