Home / 34,262.40-47,279.48-20,831.78

Finding the Fourth Proportional to 34,262.40, 47,279.48 and 20,831.78

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Solution

The fourth proportional to 34,262.40, 47,279.48 and 20,831.78 is: 28,746.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,262.40 : 47,279.48 = 20,831.78 : x
  2. Step 2: Convert to fraction form
    34,262.40/47,279.48 = 20,831.78/x
  3. Step 3: Cross multiply
    34,262.40x = 47,279.48 × 20,831.78
  4. Step 4: Simplify right side
    34,262.40x = 984,915,725.87
  5. Step 5: Solve for x
    x = 984,915,725.87/34,262.40
  6. Step 6: Final answer
    x = 28,746.26

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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.