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Finding the Fourth Proportional to 12,914.10, 17,820.90 and 7,609.23

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Solution

The fourth proportional to 12,914.10, 17,820.90 and 7,609.23 is: 10,500.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,914.10 : 17,820.90 = 7,609.23 : x
  2. Step 2: Convert to fraction form
    12,914.10/17,820.90 = 7,609.23/x
  3. Step 3: Cross multiply
    12,914.10x = 17,820.90 × 7,609.23
  4. Step 4: Simplify right side
    12,914.10x = 135,603,326.91
  5. Step 5: Solve for x
    x = 135,603,326.91/12,914.10
  6. Step 6: Final answer
    x = 10,500.41

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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.