Home / 12,439.78-17,166.63-6,774.62

Finding the Fourth Proportional to 12,439.78, 17,166.63 and 6,774.62

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Solution

The fourth proportional to 12,439.78, 17,166.63 and 6,774.62 is: 9,348.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.78 : 17,166.63 = 6,774.62 : x
  2. Step 2: Convert to fraction form
    12,439.78/17,166.63 = 6,774.62/x
  3. Step 3: Cross multiply
    12,439.78x = 17,166.63 × 6,774.62
  4. Step 4: Simplify right side
    12,439.78x = 116,297,503.49
  5. Step 5: Solve for x
    x = 116,297,503.49/12,439.78
  6. Step 6: Final answer
    x = 9,348.84

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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.