Home / 12,091.20-16,682.40-10,881.60

Finding the Fourth Proportional to 12,091.20, 16,682.40 and 10,881.60

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Solution

The fourth proportional to 12,091.20, 16,682.40 and 10,881.60 is: 15,013.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,091.20 : 16,682.40 = 10,881.60 : x
  2. Step 2: Convert to fraction form
    12,091.20/16,682.40 = 10,881.60/x
  3. Step 3: Cross multiply
    12,091.20x = 16,682.40 × 10,881.60
  4. Step 4: Simplify right side
    12,091.20x = 181,531,203.84
  5. Step 5: Solve for x
    x = 181,531,203.84/12,091.20
  6. Step 6: Final answer
    x = 15,013.50

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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.