Home / 12,186.05-16,816.61-6,880.55

Finding the Fourth Proportional to 12,186.05, 16,816.61 and 6,880.55

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Solution

The fourth proportional to 12,186.05, 16,816.61 and 6,880.55 is: 9,495.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.05 : 16,816.61 = 6,880.55 : x
  2. Step 2: Convert to fraction form
    12,186.05/16,816.61 = 6,880.55/x
  3. Step 3: Cross multiply
    12,186.05x = 16,816.61 × 6,880.55
  4. Step 4: Simplify right side
    12,186.05x = 115,707,459.05
  5. Step 5: Solve for x
    x = 115,707,459.05/12,186.05
  6. Step 6: Final answer
    x = 9,495.08

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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.