Home / 12,127.20-16,734.60-6,820.96

Finding the Fourth Proportional to 12,127.20, 16,734.60 and 6,820.96

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Solution

The fourth proportional to 12,127.20, 16,734.60 and 6,820.96 is: 9,412.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.20 : 16,734.60 = 6,820.96 : x
  2. Step 2: Convert to fraction form
    12,127.20/16,734.60 = 6,820.96/x
  3. Step 3: Cross multiply
    12,127.20x = 16,734.60 × 6,820.96
  4. Step 4: Simplify right side
    12,127.20x = 114,146,037.22
  5. Step 5: Solve for x
    x = 114,146,037.22/12,127.20
  6. Step 6: Final answer
    x = 9,412.40

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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.