Home / 21,831.36-32,588.22-20,208.48

Finding the Fourth Proportional to 21,831.36, 32,588.22 and 20,208.48

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Solution

The fourth proportional to 21,831.36, 32,588.22 and 20,208.48 is: 30,165.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,831.36 : 32,588.22 = 20,208.48 : x
  2. Step 2: Convert to fraction form
    21,831.36/32,588.22 = 20,208.48/x
  3. Step 3: Cross multiply
    21,831.36x = 32,588.22 × 20,208.48
  4. Step 4: Simplify right side
    21,831.36x = 658,558,392.11
  5. Step 5: Solve for x
    x = 658,558,392.11/21,831.36
  6. Step 6: Final answer
    x = 30,165.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.