Home / 20,986.95-31,493.70-19,016.59

Finding the Fourth Proportional to 20,986.95, 31,493.70 and 19,016.59

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Solution

The fourth proportional to 20,986.95, 31,493.70 and 19,016.59 is: 28,536.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986.95 : 31,493.70 = 19,016.59 : x
  2. Step 2: Convert to fraction form
    20,986.95/31,493.70 = 19,016.59/x
  3. Step 3: Cross multiply
    20,986.95x = 31,493.70 × 19,016.59
  4. Step 4: Simplify right side
    20,986.95x = 598,902,780.48
  5. Step 5: Solve for x
    x = 598,902,780.48/20,986.95
  6. Step 6: Final answer
    x = 28,536.91

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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.