Home / 12,306.42-16,976.96-8,055.62

Finding the Fourth Proportional to 12,306.42, 16,976.96 and 8,055.62

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Solution

The fourth proportional to 12,306.42, 16,976.96 and 8,055.62 is: 11,112.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.42 : 16,976.96 = 8,055.62 : x
  2. Step 2: Convert to fraction form
    12,306.42/16,976.96 = 8,055.62/x
  3. Step 3: Cross multiply
    12,306.42x = 16,976.96 × 8,055.62
  4. Step 4: Simplify right side
    12,306.42x = 136,759,938.52
  5. Step 5: Solve for x
    x = 136,759,938.52/12,306.42
  6. Step 6: Final answer
    x = 11,112.89

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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.