Home / 39,138.63-54,011.30-22,142.53

Finding the Fourth Proportional to 39,138.63, 54,011.30 and 22,142.53

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Solution

The fourth proportional to 39,138.63, 54,011.30 and 22,142.53 is: 30,556.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,138.63 : 54,011.30 = 22,142.53 : x
  2. Step 2: Convert to fraction form
    39,138.63/54,011.30 = 22,142.53/x
  3. Step 3: Cross multiply
    39,138.63x = 54,011.30 × 22,142.53
  4. Step 4: Simplify right side
    39,138.63x = 1,195,946,830.59
  5. Step 5: Solve for x
    x = 1,195,946,830.59/39,138.63
  6. Step 6: Final answer
    x = 30,556.69

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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.