Home / 20,326.96-28,048.60-11,831.80

Finding the Fourth Proportional to 20,326.96, 28,048.60 and 11,831.80

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Solution

The fourth proportional to 20,326.96, 28,048.60 and 11,831.80 is: 16,326.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,326.96 : 28,048.60 = 11,831.80 : x
  2. Step 2: Convert to fraction form
    20,326.96/28,048.60 = 11,831.80/x
  3. Step 3: Cross multiply
    20,326.96x = 28,048.60 × 11,831.80
  4. Step 4: Simplify right side
    20,326.96x = 331,865,425.48
  5. Step 5: Solve for x
    x = 331,865,425.48/20,326.96
  6. Step 6: Final answer
    x = 16,326.37

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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.