Home / 39,820.71-54,950.59-21,915.26

Finding the Fourth Proportional to 39,820.71, 54,950.59 and 21,915.26

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Solution

The fourth proportional to 39,820.71, 54,950.59 and 21,915.26 is: 30,241.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,820.71 : 54,950.59 = 21,915.26 : x
  2. Step 2: Convert to fraction form
    39,820.71/54,950.59 = 21,915.26/x
  3. Step 3: Cross multiply
    39,820.71x = 54,950.59 × 21,915.26
  4. Step 4: Simplify right side
    39,820.71x = 1,204,256,467.00
  5. Step 5: Solve for x
    x = 1,204,256,467.00/39,820.71
  6. Step 6: Final answer
    x = 30,241.96

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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.