Home / 13,831.14-19,089.46-8,165.56

Finding the Fourth Proportional to 13,831.14, 19,089.46 and 8,165.56

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Solution

The fourth proportional to 13,831.14, 19,089.46 and 8,165.56 is: 11,269.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.14 : 19,089.46 = 8,165.56 : x
  2. Step 2: Convert to fraction form
    13,831.14/19,089.46 = 8,165.56/x
  3. Step 3: Cross multiply
    13,831.14x = 19,089.46 × 8,165.56
  4. Step 4: Simplify right side
    13,831.14x = 155,876,131.00
  5. Step 5: Solve for x
    x = 155,876,131.00/13,831.14
  6. Step 6: Final answer
    x = 11,269.94

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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.