Home / 12,439.80-17,166.78-6,774.48

Finding the Fourth Proportional to 12,439.80, 17,166.78 and 6,774.48

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Solution

The fourth proportional to 12,439.80, 17,166.78 and 6,774.48 is: 9,348.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.80 : 17,166.78 = 6,774.48 : x
  2. Step 2: Convert to fraction form
    12,439.80/17,166.78 = 6,774.48/x
  3. Step 3: Cross multiply
    12,439.80x = 17,166.78 × 6,774.48
  4. Step 4: Simplify right side
    12,439.80x = 116,296,007.77
  5. Step 5: Solve for x
    x = 116,296,007.77/12,439.80
  6. Step 6: Final answer
    x = 9,348.70

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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.