Home / 19,188.97-28,789.20-11,598.72

Finding the Fourth Proportional to 19,188.97, 28,789.20 and 11,598.72

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Solution

The fourth proportional to 19,188.97, 28,789.20 and 11,598.72 is: 17,401.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,188.97 : 28,789.20 = 11,598.72 : x
  2. Step 2: Convert to fraction form
    19,188.97/28,789.20 = 11,598.72/x
  3. Step 3: Cross multiply
    19,188.97x = 28,789.20 × 11,598.72
  4. Step 4: Simplify right side
    19,188.97x = 333,917,869.82
  5. Step 5: Solve for x
    x = 333,917,869.82/19,188.97
  6. Step 6: Final answer
    x = 17,401.55

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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.