Home / 39,389.43-54,357.37-21,484.38

Finding the Fourth Proportional to 39,389.43, 54,357.37 and 21,484.38

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Solution

The fourth proportional to 39,389.43, 54,357.37 and 21,484.38 is: 29,648.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,389.43 : 54,357.37 = 21,484.38 : x
  2. Step 2: Convert to fraction form
    39,389.43/54,357.37 = 21,484.38/x
  3. Step 3: Cross multiply
    39,389.43x = 54,357.37 × 21,484.38
  4. Step 4: Simplify right side
    39,389.43x = 1,167,834,392.88
  5. Step 5: Solve for x
    x = 1,167,834,392.88/39,389.43
  6. Step 6: Final answer
    x = 29,648.42

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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.