Home / 12,297.72-16,966.80-6,990.60

Finding the Fourth Proportional to 12,297.72, 16,966.80 and 6,990.60

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Solution

The fourth proportional to 12,297.72, 16,966.80 and 6,990.60 is: 9,644.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,297.72 : 16,966.80 = 6,990.60 : x
  2. Step 2: Convert to fraction form
    12,297.72/16,966.80 = 6,990.60/x
  3. Step 3: Cross multiply
    12,297.72x = 16,966.80 × 6,990.60
  4. Step 4: Simplify right side
    12,297.72x = 118,608,112.08
  5. Step 5: Solve for x
    x = 118,608,112.08/12,297.72
  6. Step 6: Final answer
    x = 9,644.72

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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.