Home / 12,648.72-18,968.22-8,741.28

Finding the Fourth Proportional to 12,648.72, 18,968.22 and 8,741.28

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Solution

The fourth proportional to 12,648.72, 18,968.22 and 8,741.28 is: 13,108.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,648.72 : 18,968.22 = 8,741.28 : x
  2. Step 2: Convert to fraction form
    12,648.72/18,968.22 = 8,741.28/x
  3. Step 3: Cross multiply
    12,648.72x = 18,968.22 × 8,741.28
  4. Step 4: Simplify right side
    12,648.72x = 165,806,522.12
  5. Step 5: Solve for x
    x = 165,806,522.12/12,648.72
  6. Step 6: Final answer
    x = 13,108.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.