Home / 39,302.49-54,238.41-21,398.47

Finding the Fourth Proportional to 39,302.49, 54,238.41 and 21,398.47

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Solution

The fourth proportional to 39,302.49, 54,238.41 and 21,398.47 is: 29,530.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,302.49 : 54,238.41 = 21,398.47 : x
  2. Step 2: Convert to fraction form
    39,302.49/54,238.41 = 21,398.47/x
  3. Step 3: Cross multiply
    39,302.49x = 54,238.41 × 21,398.47
  4. Step 4: Simplify right side
    39,302.49x = 1,160,618,989.23
  5. Step 5: Solve for x
    x = 1,160,618,989.23/39,302.49
  6. Step 6: Final answer
    x = 29,530.42

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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.