Home / 20,660.93-28,514.40-19,394.09

Finding the Fourth Proportional to 20,660.93, 28,514.40 and 19,394.09

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Solution

The fourth proportional to 20,660.93, 28,514.40 and 19,394.09 is: 26,766.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,660.93 : 28,514.40 = 19,394.09 : x
  2. Step 2: Convert to fraction form
    20,660.93/28,514.40 = 19,394.09/x
  3. Step 3: Cross multiply
    20,660.93x = 28,514.40 × 19,394.09
  4. Step 4: Simplify right side
    20,660.93x = 553,010,839.90
  5. Step 5: Solve for x
    x = 553,010,839.90/20,660.93
  6. Step 6: Final answer
    x = 26,766.02

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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.