Home / 33,219.79-45,831.78-21,289.70

Finding the Fourth Proportional to 33,219.79, 45,831.78 and 21,289.70

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Solution

The fourth proportional to 33,219.79, 45,831.78 and 21,289.70 is: 29,372.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,219.79 : 45,831.78 = 21,289.70 : x
  2. Step 2: Convert to fraction form
    33,219.79/45,831.78 = 21,289.70/x
  3. Step 3: Cross multiply
    33,219.79x = 45,831.78 × 21,289.70
  4. Step 4: Simplify right side
    33,219.79x = 975,744,961.25
  5. Step 5: Solve for x
    x = 975,744,961.25/33,219.79
  6. Step 6: Final answer
    x = 29,372.40

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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.