Home / 18,831.98-25,995.12-16,168.70

Finding the Fourth Proportional to 18,831.98, 25,995.12 and 16,168.70

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Solution

The fourth proportional to 18,831.98, 25,995.12 and 16,168.70 is: 22,318.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.98 : 25,995.12 = 16,168.70 : x
  2. Step 2: Convert to fraction form
    18,831.98/25,995.12 = 16,168.70/x
  3. Step 3: Cross multiply
    18,831.98x = 25,995.12 × 16,168.70
  4. Step 4: Simplify right side
    18,831.98x = 420,307,296.74
  5. Step 5: Solve for x
    x = 420,307,296.74/18,831.98
  6. Step 6: Final answer
    x = 22,318.81

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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.