Home / 12,158.09-18,235.51-3,393.89

Finding the Fourth Proportional to 12,158.09, 18,235.51 and 3,393.89

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Solution

The fourth proportional to 12,158.09, 18,235.51 and 3,393.89 is: 5,090.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158.09 : 18,235.51 = 3,393.89 : x
  2. Step 2: Convert to fraction form
    12,158.09/18,235.51 = 3,393.89/x
  3. Step 3: Cross multiply
    12,158.09x = 18,235.51 × 3,393.89
  4. Step 4: Simplify right side
    12,158.09x = 61,889,206.89
  5. Step 5: Solve for x
    x = 61,889,206.89/12,158.09
  6. Step 6: Final answer
    x = 5,090.37

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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.