Home / 20,770.93-28,664.04-11,339.74

Finding the Fourth Proportional to 20,770.93, 28,664.04 and 11,339.74

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Solution

The fourth proportional to 20,770.93, 28,664.04 and 11,339.74 is: 15,648.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.93 : 28,664.04 = 11,339.74 : x
  2. Step 2: Convert to fraction form
    20,770.93/28,664.04 = 11,339.74/x
  3. Step 3: Cross multiply
    20,770.93x = 28,664.04 × 11,339.74
  4. Step 4: Simplify right side
    20,770.93x = 325,042,760.95
  5. Step 5: Solve for x
    x = 325,042,760.95/20,770.93
  6. Step 6: Final answer
    x = 15,648.93

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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.