Home / 30,831.29-42,548.03-18,727.68

Finding the Fourth Proportional to 30,831.29, 42,548.03 and 18,727.68

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Solution

The fourth proportional to 30,831.29, 42,548.03 and 18,727.68 is: 25,844.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,831.29 : 42,548.03 = 18,727.68 : x
  2. Step 2: Convert to fraction form
    30,831.29/42,548.03 = 18,727.68/x
  3. Step 3: Cross multiply
    30,831.29x = 42,548.03 × 18,727.68
  4. Step 4: Simplify right side
    30,831.29x = 796,825,890.47
  5. Step 5: Solve for x
    x = 796,825,890.47/30,831.29
  6. Step 6: Final answer
    x = 25,844.71

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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.