Home / 21,915.88-32,859.76-13,028.84

Finding the Fourth Proportional to 21,915.88, 32,859.76 and 13,028.84

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Solution

The fourth proportional to 21,915.88, 32,859.76 and 13,028.84 is: 19,534.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,915.88 : 32,859.76 = 13,028.84 : x
  2. Step 2: Convert to fraction form
    21,915.88/32,859.76 = 13,028.84/x
  3. Step 3: Cross multiply
    21,915.88x = 32,859.76 × 13,028.84
  4. Step 4: Simplify right side
    21,915.88x = 428,124,555.48
  5. Step 5: Solve for x
    x = 428,124,555.48/21,915.88
  6. Step 6: Final answer
    x = 19,534.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.