Home / 39,846.50-54,988.12-21,941.55

Finding the Fourth Proportional to 39,846.50, 54,988.12 and 21,941.55

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Solution

The fourth proportional to 39,846.50, 54,988.12 and 21,941.55 is: 30,279.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,846.50 : 54,988.12 = 21,941.55 : x
  2. Step 2: Convert to fraction form
    39,846.50/54,988.12 = 21,941.55/x
  3. Step 3: Cross multiply
    39,846.50x = 54,988.12 × 21,941.55
  4. Step 4: Simplify right side
    39,846.50x = 1,206,524,488.39
  5. Step 5: Solve for x
    x = 1,206,524,488.39/39,846.50
  6. Step 6: Final answer
    x = 30,279.31

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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.