Home / 39,239.82-58,851.43-12,938.31

Finding the Fourth Proportional to 39,239.82, 58,851.43 and 12,938.31

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Solution

The fourth proportional to 39,239.82, 58,851.43 and 12,938.31 is: 19,404.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,239.82 : 58,851.43 = 12,938.31 : x
  2. Step 2: Convert to fraction form
    39,239.82/58,851.43 = 12,938.31/x
  3. Step 3: Cross multiply
    39,239.82x = 58,851.43 × 12,938.31
  4. Step 4: Simplify right side
    39,239.82x = 761,438,012.94
  5. Step 5: Solve for x
    x = 761,438,012.94/39,239.82
  6. Step 6: Final answer
    x = 19,404.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.