Home / 19,086.59-28,610.28-7,999.71

Finding the Fourth Proportional to 19,086.59, 28,610.28 and 7,999.71

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Solution

The fourth proportional to 19,086.59, 28,610.28 and 7,999.71 is: 11,991.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,086.59 : 28,610.28 = 7,999.71 : x
  2. Step 2: Convert to fraction form
    19,086.59/28,610.28 = 7,999.71/x
  3. Step 3: Cross multiply
    19,086.59x = 28,610.28 × 7,999.71
  4. Step 4: Simplify right side
    19,086.59x = 228,873,943.02
  5. Step 5: Solve for x
    x = 228,873,943.02/19,086.59
  6. Step 6: Final answer
    x = 11,991.35

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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.