Home / 18,419.98-25,428.66-12,759.04

Finding the Fourth Proportional to 18,419.98, 25,428.66 and 12,759.04

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Solution

The fourth proportional to 18,419.98, 25,428.66 and 12,759.04 is: 17,613.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,419.98 : 25,428.66 = 12,759.04 : x
  2. Step 2: Convert to fraction form
    18,419.98/25,428.66 = 12,759.04/x
  3. Step 3: Cross multiply
    18,419.98x = 25,428.66 × 12,759.04
  4. Step 4: Simplify right side
    18,419.98x = 324,445,290.09
  5. Step 5: Solve for x
    x = 324,445,290.09/18,419.98
  6. Step 6: Final answer
    x = 17,613.77

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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.