Home / 39,139.84-54,011.76-22,142.80

Finding the Fourth Proportional to 39,139.84, 54,011.76 and 22,142.80

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Solution

The fourth proportional to 39,139.84, 54,011.76 and 22,142.80 is: 30,556.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,139.84 : 54,011.76 = 22,142.80 : x
  2. Step 2: Convert to fraction form
    39,139.84/54,011.76 = 22,142.80/x
  3. Step 3: Cross multiply
    39,139.84x = 54,011.76 × 22,142.80
  4. Step 4: Simplify right side
    39,139.84x = 1,195,971,599.33
  5. Step 5: Solve for x
    x = 1,195,971,599.33/39,139.84
  6. Step 6: Final answer
    x = 30,556.37

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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.