Home / 33,129.43-45,737.48-21,831.76

Finding the Fourth Proportional to 33,129.43, 45,737.48 and 21,831.76

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Solution

The fourth proportional to 33,129.43, 45,737.48 and 21,831.76 is: 30,140.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,129.43 : 45,737.48 = 21,831.76 : x
  2. Step 2: Convert to fraction form
    33,129.43/45,737.48 = 21,831.76/x
  3. Step 3: Cross multiply
    33,129.43x = 45,737.48 × 21,831.76
  4. Step 4: Simplify right side
    33,129.43x = 998,529,686.36
  5. Step 5: Solve for x
    x = 998,529,686.36/33,129.43
  6. Step 6: Final answer
    x = 30,140.26

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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.