Home / 39,381.84-54,346.14-21,476.97

Finding the Fourth Proportional to 39,381.84, 54,346.14 and 21,476.97

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Solution

The fourth proportional to 39,381.84, 54,346.14 and 21,476.97 is: 29,637.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,381.84 : 54,346.14 = 21,476.97 : x
  2. Step 2: Convert to fraction form
    39,381.84/54,346.14 = 21,476.97/x
  3. Step 3: Cross multiply
    39,381.84x = 54,346.14 × 21,476.97
  4. Step 4: Simplify right side
    39,381.84x = 1,167,190,418.40
  5. Step 5: Solve for x
    x = 1,167,190,418.40/39,381.84
  6. Step 6: Final answer
    x = 29,637.78

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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.