Home / 18,825.88-28,243.58-13,290.04

Finding the Fourth Proportional to 18,825.88, 28,243.58 and 13,290.04

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Solution

The fourth proportional to 18,825.88, 28,243.58 and 13,290.04 is: 19,938.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.88 : 28,243.58 = 13,290.04 : x
  2. Step 2: Convert to fraction form
    18,825.88/28,243.58 = 13,290.04/x
  3. Step 3: Cross multiply
    18,825.88x = 28,243.58 × 13,290.04
  4. Step 4: Simplify right side
    18,825.88x = 375,358,307.94
  5. Step 5: Solve for x
    x = 375,358,307.94/18,825.88
  6. Step 6: Final answer
    x = 19,938.42

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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.