Home / 34,255.70-47,287.40-20,831.22

Finding the Fourth Proportional to 34,255.70, 47,287.40 and 20,831.22

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Solution

The fourth proportional to 34,255.70, 47,287.40 and 20,831.22 is: 28,755.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,255.70 : 47,287.40 = 20,831.22 : x
  2. Step 2: Convert to fraction form
    34,255.70/47,287.40 = 20,831.22/x
  3. Step 3: Cross multiply
    34,255.70x = 47,287.40 × 20,831.22
  4. Step 4: Simplify right side
    34,255.70x = 985,054,232.63
  5. Step 5: Solve for x
    x = 985,054,232.63/34,255.70
  6. Step 6: Final answer
    x = 28,755.92

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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.