Home / 12,211.34-18,303.55-7,989.52

Finding the Fourth Proportional to 12,211.34, 18,303.55 and 7,989.52

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Solution

The fourth proportional to 12,211.34, 18,303.55 and 7,989.52 is: 11,975.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.34 : 18,303.55 = 7,989.52 : x
  2. Step 2: Convert to fraction form
    12,211.34/18,303.55 = 7,989.52/x
  3. Step 3: Cross multiply
    12,211.34x = 18,303.55 × 7,989.52
  4. Step 4: Simplify right side
    12,211.34x = 146,236,447.33
  5. Step 5: Solve for x
    x = 146,236,447.33/12,211.34
  6. Step 6: Final answer
    x = 11,975.47

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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.