Home / 12,181.74-16,810.68-6,878.28

Finding the Fourth Proportional to 12,181.74, 16,810.68 and 6,878.28

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Solution

The fourth proportional to 12,181.74, 16,810.68 and 6,878.28 is: 9,491.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,181.74 : 16,810.68 = 6,878.28 : x
  2. Step 2: Convert to fraction form
    12,181.74/16,810.68 = 6,878.28/x
  3. Step 3: Cross multiply
    12,181.74x = 16,810.68 × 6,878.28
  4. Step 4: Simplify right side
    12,181.74x = 115,628,564.03
  5. Step 5: Solve for x
    x = 115,628,564.03/12,181.74
  6. Step 6: Final answer
    x = 9,491.96

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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.