Home / 12,078.40-16,667.76-6,773.44

Finding the Fourth Proportional to 12,078.40, 16,667.76 and 6,773.44

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Solution

The fourth proportional to 12,078.40, 16,667.76 and 6,773.44 is: 9,347.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.40 : 16,667.76 = 6,773.44 : x
  2. Step 2: Convert to fraction form
    12,078.40/16,667.76 = 6,773.44/x
  3. Step 3: Cross multiply
    12,078.40x = 16,667.76 × 6,773.44
  4. Step 4: Simplify right side
    12,078.40x = 112,898,072.29
  5. Step 5: Solve for x
    x = 112,898,072.29/12,078.40
  6. Step 6: Final answer
    x = 9,347.10

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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.