Home / 19,558.11-26,993.75-12,831.87

Finding the Fourth Proportional to 19,558.11, 26,993.75 and 12,831.87

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Solution

The fourth proportional to 19,558.11, 26,993.75 and 12,831.87 is: 17,710.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,558.11 : 26,993.75 = 12,831.87 : x
  2. Step 2: Convert to fraction form
    19,558.11/26,993.75 = 12,831.87/x
  3. Step 3: Cross multiply
    19,558.11x = 26,993.75 × 12,831.87
  4. Step 4: Simplify right side
    19,558.11x = 346,380,290.81
  5. Step 5: Solve for x
    x = 346,380,290.81/19,558.11
  6. Step 6: Final answer
    x = 17,710.32

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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.