Home / 12,078.63-16,668.68-7,297.91

Finding the Fourth Proportional to 12,078.63, 16,668.68 and 7,297.91

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Solution

The fourth proportional to 12,078.63, 16,668.68 and 7,297.91 is: 10,071.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.63 : 16,668.68 = 7,297.91 : x
  2. Step 2: Convert to fraction form
    12,078.63/16,668.68 = 7,297.91/x
  3. Step 3: Cross multiply
    12,078.63x = 16,668.68 × 7,297.91
  4. Step 4: Simplify right side
    12,078.63x = 121,646,406.63
  5. Step 5: Solve for x
    x = 121,646,406.63/12,078.63
  6. Step 6: Final answer
    x = 10,071.21

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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.