Home / 12,078.78-16,668.36-6,773.82

Finding the Fourth Proportional to 12,078.78, 16,668.36 and 6,773.82

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Solution

The fourth proportional to 12,078.78, 16,668.36 and 6,773.82 is: 9,347.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.78 : 16,668.36 = 6,773.82 : x
  2. Step 2: Convert to fraction form
    12,078.78/16,668.36 = 6,773.82/x
  3. Step 3: Cross multiply
    12,078.78x = 16,668.36 × 6,773.82
  4. Step 4: Simplify right side
    12,078.78x = 112,908,470.34
  5. Step 5: Solve for x
    x = 112,908,470.34/12,078.78
  6. Step 6: Final answer
    x = 9,347.67

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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.