Home / 12,645.34-17,447.07-8,169.28

Finding the Fourth Proportional to 12,645.34, 17,447.07 and 8,169.28

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Solution

The fourth proportional to 12,645.34, 17,447.07 and 8,169.28 is: 11,271.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.34 : 17,447.07 = 8,169.28 : x
  2. Step 2: Convert to fraction form
    12,645.34/17,447.07 = 8,169.28/x
  3. Step 3: Cross multiply
    12,645.34x = 17,447.07 × 8,169.28
  4. Step 4: Simplify right side
    12,645.34x = 142,530,000.01
  5. Step 5: Solve for x
    x = 142,530,000.01/12,645.34
  6. Step 6: Final answer
    x = 11,271.35

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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.