Home / 39,809.55-54,938.46-21,906.52

Finding the Fourth Proportional to 39,809.55, 54,938.46 and 21,906.52

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Solution

The fourth proportional to 39,809.55, 54,938.46 and 21,906.52 is: 30,231.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,809.55 : 54,938.46 = 21,906.52 : x
  2. Step 2: Convert to fraction form
    39,809.55/54,938.46 = 21,906.52/x
  3. Step 3: Cross multiply
    39,809.55x = 54,938.46 × 21,906.52
  4. Step 4: Simplify right side
    39,809.55x = 1,203,510,472.76
  5. Step 5: Solve for x
    x = 1,203,510,472.76/39,809.55
  6. Step 6: Final answer
    x = 30,231.70

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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.