Home / 12,135.66-18,211.73-4,740.09

Finding the Fourth Proportional to 12,135.66, 18,211.73 and 4,740.09

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Solution

The fourth proportional to 12,135.66, 18,211.73 and 4,740.09 is: 7,113.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.66 : 18,211.73 = 4,740.09 : x
  2. Step 2: Convert to fraction form
    12,135.66/18,211.73 = 4,740.09/x
  3. Step 3: Cross multiply
    12,135.66x = 18,211.73 × 4,740.09
  4. Step 4: Simplify right side
    12,135.66x = 86,325,215.56
  5. Step 5: Solve for x
    x = 86,325,215.56/12,135.66
  6. Step 6: Final answer
    x = 7,113.35

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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.