Home / 12,185.36-16,815.45-6,880.68

Finding the Fourth Proportional to 12,185.36, 16,815.45 and 6,880.68

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Solution

The fourth proportional to 12,185.36, 16,815.45 and 6,880.68 is: 9,495.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,185.36 : 16,815.45 = 6,880.68 : x
  2. Step 2: Convert to fraction form
    12,185.36/16,815.45 = 6,880.68/x
  3. Step 3: Cross multiply
    12,185.36x = 16,815.45 × 6,880.68
  4. Step 4: Simplify right side
    12,185.36x = 115,701,730.51
  5. Step 5: Solve for x
    x = 115,701,730.51/12,185.36
  6. Step 6: Final answer
    x = 9,495.14

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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.