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Finding the Fourth Proportional to 12,927, 17,836.47 and 7,619.88

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Solution

The fourth proportional to 12,927, 17,836.47 and 7,619.88 is: 10,513.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,927 : 17,836.47 = 7,619.88 : x
  2. Step 2: Convert to fraction form
    12,927/17,836.47 = 7,619.88/x
  3. Step 3: Cross multiply
    12,927x = 17,836.47 × 7,619.88
  4. Step 4: Simplify right side
    12,927x = 135,911,761.02
  5. Step 5: Solve for x
    x = 135,911,761.02/12,927
  6. Step 6: Final answer
    x = 10,513.79

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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.