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Finding the Fourth Proportional to 12,836.39, 17,713.58 and 7,170.01

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Solution

The fourth proportional to 12,836.39, 17,713.58 and 7,170.01 is: 9,894.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,836.39 : 17,713.58 = 7,170.01 : x
  2. Step 2: Convert to fraction form
    12,836.39/17,713.58 = 7,170.01/x
  3. Step 3: Cross multiply
    12,836.39x = 17,713.58 × 7,170.01
  4. Step 4: Simplify right side
    12,836.39x = 127,006,421.32
  5. Step 5: Solve for x
    x = 127,006,421.32/12,836.39
  6. Step 6: Final answer
    x = 9,894.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.