Home / 18,854.09-28,270.31-7,768.43

Finding the Fourth Proportional to 18,854.09, 28,270.31 and 7,768.43

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Solution

The fourth proportional to 18,854.09, 28,270.31 and 7,768.43 is: 11,648.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854.09 : 28,270.31 = 7,768.43 : x
  2. Step 2: Convert to fraction form
    18,854.09/28,270.31 = 7,768.43/x
  3. Step 3: Cross multiply
    18,854.09x = 28,270.31 × 7,768.43
  4. Step 4: Simplify right side
    18,854.09x = 219,615,956.15
  5. Step 5: Solve for x
    x = 219,615,956.15/18,854.09
  6. Step 6: Final answer
    x = 11,648.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.