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Finding the Fourth Proportional to 12,078.84, 16,668.55 and 6,773.55

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Solution

The fourth proportional to 12,078.84, 16,668.55 and 6,773.55 is: 9,347.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.84 : 16,668.55 = 6,773.55 : x
  2. Step 2: Convert to fraction form
    12,078.84/16,668.55 = 6,773.55/x
  3. Step 3: Cross multiply
    12,078.84x = 16,668.55 × 6,773.55
  4. Step 4: Simplify right side
    12,078.84x = 112,905,256.85
  5. Step 5: Solve for x
    x = 112,905,256.85/12,078.84
  6. Step 6: Final answer
    x = 9,347.36

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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.