Home / 39,161.88-54,043.50-21,256.96

Finding the Fourth Proportional to 39,161.88, 54,043.50 and 21,256.96

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Solution

The fourth proportional to 39,161.88, 54,043.50 and 21,256.96 is: 29,334.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,161.88 : 54,043.50 = 21,256.96 : x
  2. Step 2: Convert to fraction form
    39,161.88/54,043.50 = 21,256.96/x
  3. Step 3: Cross multiply
    39,161.88x = 54,043.50 × 21,256.96
  4. Step 4: Simplify right side
    39,161.88x = 1,148,800,411.70
  5. Step 5: Solve for x
    x = 1,148,800,411.70/39,161.88
  6. Step 6: Final answer
    x = 29,334.66

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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.