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Finding the Fourth Proportional to 12,444, 17,172.72 and 6,855.36

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Solution

The fourth proportional to 12,444, 17,172.72 and 6,855.36 is: 9,460.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,444 : 17,172.72 = 6,855.36 : x
  2. Step 2: Convert to fraction form
    12,444/17,172.72 = 6,855.36/x
  3. Step 3: Cross multiply
    12,444x = 17,172.72 × 6,855.36
  4. Step 4: Simplify right side
    12,444x = 117,725,177.78
  5. Step 5: Solve for x
    x = 117,725,177.78/12,444
  6. Step 6: Final answer
    x = 9,460.40

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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.