Home / 18,989.86-26,201.54-11,027.36

Finding the Fourth Proportional to 18,989.86, 26,201.54 and 11,027.36

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Solution

The fourth proportional to 18,989.86, 26,201.54 and 11,027.36 is: 15,215.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.86 : 26,201.54 = 11,027.36 : x
  2. Step 2: Convert to fraction form
    18,989.86/26,201.54 = 11,027.36/x
  3. Step 3: Cross multiply
    18,989.86x = 26,201.54 × 11,027.36
  4. Step 4: Simplify right side
    18,989.86x = 288,933,814.13
  5. Step 5: Solve for x
    x = 288,933,814.13/18,989.86
  6. Step 6: Final answer
    x = 15,215.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.