Home / 12,106.09-16,681.84-8,742.97

Finding the Fourth Proportional to 12,106.09, 16,681.84 and 8,742.97

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Solution

The fourth proportional to 12,106.09, 16,681.84 and 8,742.97 is: 12,047.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,106.09 : 16,681.84 = 8,742.97 : x
  2. Step 2: Convert to fraction form
    12,106.09/16,681.84 = 8,742.97/x
  3. Step 3: Cross multiply
    12,106.09x = 16,681.84 × 8,742.97
  4. Step 4: Simplify right side
    12,106.09x = 145,848,826.66
  5. Step 5: Solve for x
    x = 145,848,826.66/12,106.09
  6. Step 6: Final answer
    x = 12,047.56

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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.