Home / 39,820.45-54,952.26-21,915.46

Finding the Fourth Proportional to 39,820.45, 54,952.26 and 21,915.46

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Solution

The fourth proportional to 39,820.45, 54,952.26 and 21,915.46 is: 30,243.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,820.45 : 54,952.26 = 21,915.46 : x
  2. Step 2: Convert to fraction form
    39,820.45/54,952.26 = 21,915.46/x
  3. Step 3: Cross multiply
    39,820.45x = 54,952.26 × 21,915.46
  4. Step 4: Simplify right side
    39,820.45x = 1,204,304,055.94
  5. Step 5: Solve for x
    x = 1,204,304,055.94/39,820.45
  6. Step 6: Final answer
    x = 30,243.36

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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.