Home / 12,190.36-16,820.62-6,885.67

Finding the Fourth Proportional to 12,190.36, 16,820.62 and 6,885.67

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Solution

The fourth proportional to 12,190.36, 16,820.62 and 6,885.67 is: 9,501.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.36 : 16,820.62 = 6,885.67 : x
  2. Step 2: Convert to fraction form
    12,190.36/16,820.62 = 6,885.67/x
  3. Step 3: Cross multiply
    12,190.36x = 16,820.62 × 6,885.67
  4. Step 4: Simplify right side
    12,190.36x = 115,821,238.52
  5. Step 5: Solve for x
    x = 115,821,238.52/12,190.36
  6. Step 6: Final answer
    x = 9,501.05

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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.