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Finding the Fourth Proportional to 12,358, 17,054.04 and 7,390

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Solution

The fourth proportional to 12,358, 17,054.04 and 7,390 is: 10,198.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,358 : 17,054.04 = 7,390 : x
  2. Step 2: Convert to fraction form
    12,358/17,054.04 = 7,390/x
  3. Step 3: Cross multiply
    12,358x = 17,054.04 × 7,390
  4. Step 4: Simplify right side
    12,358x = 126,029,355.60
  5. Step 5: Solve for x
    x = 126,029,355.60/12,358
  6. Step 6: Final answer
    x = 10,198.20

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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.