Home / 12,286.20-16,948.80-7,802.64

Finding the Fourth Proportional to 12,286.20, 16,948.80 and 7,802.64

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Solution

The fourth proportional to 12,286.20, 16,948.80 and 7,802.64 is: 10,763.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286.20 : 16,948.80 = 7,802.64 : x
  2. Step 2: Convert to fraction form
    12,286.20/16,948.80 = 7,802.64/x
  3. Step 3: Cross multiply
    12,286.20x = 16,948.80 × 7,802.64
  4. Step 4: Simplify right side
    12,286.20x = 132,245,384.83
  5. Step 5: Solve for x
    x = 132,245,384.83/12,286.20
  6. Step 6: Final answer
    x = 10,763.73

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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.