Home / 20,282.95-28,133.67-19,743.49

Finding the Fourth Proportional to 20,282.95, 28,133.67 and 19,743.49

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Solution

The fourth proportional to 20,282.95, 28,133.67 and 19,743.49 is: 27,385.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,282.95 : 28,133.67 = 19,743.49 : x
  2. Step 2: Convert to fraction form
    20,282.95/28,133.67 = 19,743.49/x
  3. Step 3: Cross multiply
    20,282.95x = 28,133.67 × 19,743.49
  4. Step 4: Simplify right side
    20,282.95x = 555,456,687.94
  5. Step 5: Solve for x
    x = 555,456,687.94/20,282.95
  6. Step 6: Final answer
    x = 27,385.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.