Home / 20,616.38-28,453.66-13,063.42

Finding the Fourth Proportional to 20,616.38, 28,453.66 and 13,063.42

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Solution

The fourth proportional to 20,616.38, 28,453.66 and 13,063.42 is: 18,029.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.38 : 28,453.66 = 13,063.42 : x
  2. Step 2: Convert to fraction form
    20,616.38/28,453.66 = 13,063.42/x
  3. Step 3: Cross multiply
    20,616.38x = 28,453.66 × 13,063.42
  4. Step 4: Simplify right side
    20,616.38x = 371,702,111.12
  5. Step 5: Solve for x
    x = 371,702,111.12/20,616.38
  6. Step 6: Final answer
    x = 18,029.46

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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.