Home / 21,831.68-32,716.52-16,815.08

Finding the Fourth Proportional to 21,831.68, 32,716.52 and 16,815.08

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Solution

The fourth proportional to 21,831.68, 32,716.52 and 16,815.08 is: 25,198.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,831.68 : 32,716.52 = 16,815.08 : x
  2. Step 2: Convert to fraction form
    21,831.68/32,716.52 = 16,815.08/x
  3. Step 3: Cross multiply
    21,831.68x = 32,716.52 × 16,815.08
  4. Step 4: Simplify right side
    21,831.68x = 550,130,653.46
  5. Step 5: Solve for x
    x = 550,130,653.46/21,831.68
  6. Step 6: Final answer
    x = 25,198.74

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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.