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Finding the Fourth Proportional to 12,623.67, 17,420.67 and 7,034.67

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Solution

The fourth proportional to 12,623.67, 17,420.67 and 7,034.67 is: 9,707.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,623.67 : 17,420.67 = 7,034.67 : x
  2. Step 2: Convert to fraction form
    12,623.67/17,420.67 = 7,034.67/x
  3. Step 3: Cross multiply
    12,623.67x = 17,420.67 × 7,034.67
  4. Step 4: Simplify right side
    12,623.67x = 122,548,664.63
  5. Step 5: Solve for x
    x = 122,548,664.63/12,623.67
  6. Step 6: Final answer
    x = 9,707.85

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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.