Home / 19,278.63-28,933.38-18,663.55

Finding the Fourth Proportional to 19,278.63, 28,933.38 and 18,663.55

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Solution

The fourth proportional to 19,278.63, 28,933.38 and 18,663.55 is: 28,010.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,278.63 : 28,933.38 = 18,663.55 : x
  2. Step 2: Convert to fraction form
    19,278.63/28,933.38 = 18,663.55/x
  3. Step 3: Cross multiply
    19,278.63x = 28,933.38 × 18,663.55
  4. Step 4: Simplify right side
    19,278.63x = 539,999,584.30
  5. Step 5: Solve for x
    x = 539,999,584.30/19,278.63
  6. Step 6: Final answer
    x = 28,010.27

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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.