Home / 12,106.72-16,712.96-8,080.28

Finding the Fourth Proportional to 12,106.72, 16,712.96 and 8,080.28

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Solution

The fourth proportional to 12,106.72, 16,712.96 and 8,080.28 is: 11,154.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,106.72 : 16,712.96 = 8,080.28 : x
  2. Step 2: Convert to fraction form
    12,106.72/16,712.96 = 8,080.28/x
  3. Step 3: Cross multiply
    12,106.72x = 16,712.96 × 8,080.28
  4. Step 4: Simplify right side
    12,106.72x = 135,045,272.46
  5. Step 5: Solve for x
    x = 135,045,272.46/12,106.72
  6. Step 6: Final answer
    x = 11,154.57

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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.