Home / 12,211.54-18,320.96-8,660.50

Finding the Fourth Proportional to 12,211.54, 18,320.96 and 8,660.50

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Solution

The fourth proportional to 12,211.54, 18,320.96 and 8,660.50 is: 12,993.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.54 : 18,320.96 = 8,660.50 : x
  2. Step 2: Convert to fraction form
    12,211.54/18,320.96 = 8,660.50/x
  3. Step 3: Cross multiply
    12,211.54x = 18,320.96 × 8,660.50
  4. Step 4: Simplify right side
    12,211.54x = 158,668,649.93
  5. Step 5: Solve for x
    x = 158,668,649.93/12,211.54
  6. Step 6: Final answer
    x = 12,993.34

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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.