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Finding the Fourth Proportional to 12,608.36, 17,398.86 and 7,019

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Solution

The fourth proportional to 12,608.36, 17,398.86 and 7,019 is: 9,685.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,608.36 : 17,398.86 = 7,019 : x
  2. Step 2: Convert to fraction form
    12,608.36/17,398.86 = 7,019/x
  3. Step 3: Cross multiply
    12,608.36x = 17,398.86 × 7,019
  4. Step 4: Simplify right side
    12,608.36x = 122,122,598.34
  5. Step 5: Solve for x
    x = 122,122,598.34/12,608.36
  6. Step 6: Final answer
    x = 9,685.84

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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.