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Finding the Fourth Proportional to 12,944.54, 17,866.36 and 8,460.58

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Solution

The fourth proportional to 12,944.54, 17,866.36 and 8,460.58 is: 11,677.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,944.54 : 17,866.36 = 8,460.58 : x
  2. Step 2: Convert to fraction form
    12,944.54/17,866.36 = 8,460.58/x
  3. Step 3: Cross multiply
    12,944.54x = 17,866.36 × 8,460.58
  4. Step 4: Simplify right side
    12,944.54x = 151,159,768.09
  5. Step 5: Solve for x
    x = 151,159,768.09/12,944.54
  6. Step 6: Final answer
    x = 11,677.49

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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.