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Finding the Fourth Proportional to 12,556.92, 17,328.88 and 6,891.92

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Solution

The fourth proportional to 12,556.92, 17,328.88 and 6,891.92 is: 9,511.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,556.92 : 17,328.88 = 6,891.92 : x
  2. Step 2: Convert to fraction form
    12,556.92/17,328.88 = 6,891.92/x
  3. Step 3: Cross multiply
    12,556.92x = 17,328.88 × 6,891.92
  4. Step 4: Simplify right side
    12,556.92x = 119,429,254.65
  5. Step 5: Solve for x
    x = 119,429,254.65/12,556.92
  6. Step 6: Final answer
    x = 9,511.03

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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.