Home / 18,831.24-25,990.74-12,458.16

Finding the Fourth Proportional to 18,831.24, 25,990.74 and 12,458.16

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Solution

The fourth proportional to 18,831.24, 25,990.74 and 12,458.16 is: 17,194.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.24 : 25,990.74 = 12,458.16 : x
  2. Step 2: Convert to fraction form
    18,831.24/25,990.74 = 12,458.16/x
  3. Step 3: Cross multiply
    18,831.24x = 25,990.74 × 12,458.16
  4. Step 4: Simplify right side
    18,831.24x = 323,796,797.44
  5. Step 5: Solve for x
    x = 323,796,797.44/18,831.24
  6. Step 6: Final answer
    x = 17,194.66

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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.