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Finding the Fourth Proportional to 12,192.80, 16,826.04 and 6,888.72

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Solution

The fourth proportional to 12,192.80, 16,826.04 and 6,888.72 is: 9,506.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,192.80 : 16,826.04 = 6,888.72 : x
  2. Step 2: Convert to fraction form
    12,192.80/16,826.04 = 6,888.72/x
  3. Step 3: Cross multiply
    12,192.80x = 16,826.04 × 6,888.72
  4. Step 4: Simplify right side
    12,192.80x = 115,909,878.27
  5. Step 5: Solve for x
    x = 115,909,878.27/12,192.80
  6. Step 6: Final answer
    x = 9,506.42

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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.