Home / 12,691.26-17,503.21-9,512.01

Finding the Fourth Proportional to 12,691.26, 17,503.21 and 9,512.01

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Solution

The fourth proportional to 12,691.26, 17,503.21 and 9,512.01 is: 13,118.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.26 : 17,503.21 = 9,512.01 : x
  2. Step 2: Convert to fraction form
    12,691.26/17,503.21 = 9,512.01/x
  3. Step 3: Cross multiply
    12,691.26x = 17,503.21 × 9,512.01
  4. Step 4: Simplify right side
    12,691.26x = 166,490,708.55
  5. Step 5: Solve for x
    x = 166,490,708.55/12,691.26
  6. Step 6: Final answer
    x = 13,118.53

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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.