Home / 12,680.88-17,504.28-9,531.60

Finding the Fourth Proportional to 12,680.88, 17,504.28 and 9,531.60

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Solution

The fourth proportional to 12,680.88, 17,504.28 and 9,531.60 is: 13,157.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680.88 : 17,504.28 = 9,531.60 : x
  2. Step 2: Convert to fraction form
    12,680.88/17,504.28 = 9,531.60/x
  3. Step 3: Cross multiply
    12,680.88x = 17,504.28 × 9,531.60
  4. Step 4: Simplify right side
    12,680.88x = 166,843,795.25
  5. Step 5: Solve for x
    x = 166,843,795.25/12,680.88
  6. Step 6: Final answer
    x = 13,157.11

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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.