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Finding the Fourth Proportional to 12,180.60, 17,087.40 and 12,180.60

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Solution

The fourth proportional to 12,180.60, 17,087.40 and 12,180.60 is: 17,087.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.60 : 17,087.40 = 12,180.60 : x
  2. Step 2: Convert to fraction form
    12,180.60/17,087.40 = 12,180.60/x
  3. Step 3: Cross multiply
    12,180.60x = 17,087.40 × 12,180.60
  4. Step 4: Simplify right side
    12,180.60x = 208,134,784.44
  5. Step 5: Solve for x
    x = 208,134,784.44/12,180.60
  6. Step 6: Final answer
    x = 17,087.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.