Home / 12,720.33-19,080.51-3,955.23

Finding the Fourth Proportional to 12,720.33, 19,080.51 and 3,955.23

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Solution

The fourth proportional to 12,720.33, 19,080.51 and 3,955.23 is: 5,932.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.33 : 19,080.51 = 3,955.23 : x
  2. Step 2: Convert to fraction form
    12,720.33/19,080.51 = 3,955.23/x
  3. Step 3: Cross multiply
    12,720.33x = 19,080.51 × 3,955.23
  4. Step 4: Simplify right side
    12,720.33x = 75,467,805.57
  5. Step 5: Solve for x
    x = 75,467,805.57/12,720.33
  6. Step 6: Final answer
    x = 5,932.85

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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.