Home / 12,127.88-16,735.57-6,821.67

Finding the Fourth Proportional to 12,127.88, 16,735.57 and 6,821.67

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Solution

The fourth proportional to 12,127.88, 16,735.57 and 6,821.67 is: 9,413.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.88 : 16,735.57 = 6,821.67 : x
  2. Step 2: Convert to fraction form
    12,127.88/16,735.57 = 6,821.67/x
  3. Step 3: Cross multiply
    12,127.88x = 16,735.57 × 6,821.67
  4. Step 4: Simplify right side
    12,127.88x = 114,164,535.80
  5. Step 5: Solve for x
    x = 114,164,535.80/12,127.88
  6. Step 6: Final answer
    x = 9,413.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.