Home / 12,087.63-16,686.61-8,111.54

Finding the Fourth Proportional to 12,087.63, 16,686.61 and 8,111.54

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Solution

The fourth proportional to 12,087.63, 16,686.61 and 8,111.54 is: 11,197.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.63 : 16,686.61 = 8,111.54 : x
  2. Step 2: Convert to fraction form
    12,087.63/16,686.61 = 8,111.54/x
  3. Step 3: Cross multiply
    12,087.63x = 16,686.61 × 8,111.54
  4. Step 4: Simplify right side
    12,087.63x = 135,354,125.92
  5. Step 5: Solve for x
    x = 135,354,125.92/12,087.63
  6. Step 6: Final answer
    x = 11,197.74

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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.