Home / 11,856.40-16,363.10-6,820.84

Finding the Fourth Proportional to 11,856.40, 16,363.10 and 6,820.84

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Solution

The fourth proportional to 11,856.40, 16,363.10 and 6,820.84 is: 9,413.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,856.40 : 16,363.10 = 6,820.84 : x
  2. Step 2: Convert to fraction form
    11,856.40/16,363.10 = 6,820.84/x
  3. Step 3: Cross multiply
    11,856.40x = 16,363.10 × 6,820.84
  4. Step 4: Simplify right side
    11,856.40x = 111,610,087.00
  5. Step 5: Solve for x
    x = 111,610,087.00/11,856.40
  6. Step 6: Final answer
    x = 9,413.49

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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.