Home / 20,604.82-28,434.51-11,173.38

Finding the Fourth Proportional to 20,604.82, 28,434.51 and 11,173.38

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Solution

The fourth proportional to 20,604.82, 28,434.51 and 11,173.38 is: 15,419.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604.82 : 28,434.51 = 11,173.38 : x
  2. Step 2: Convert to fraction form
    20,604.82/28,434.51 = 11,173.38/x
  3. Step 3: Cross multiply
    20,604.82x = 28,434.51 × 11,173.38
  4. Step 4: Simplify right side
    20,604.82x = 317,709,585.34
  5. Step 5: Solve for x
    x = 317,709,585.34/20,604.82
  6. Step 6: Final answer
    x = 15,419.19

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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.