Home / 20,486.73-28,253.03-13,410.57

Finding the Fourth Proportional to 20,486.73, 28,253.03 and 13,410.57

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Solution

The fourth proportional to 20,486.73, 28,253.03 and 13,410.57 is: 18,494.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.73 : 28,253.03 = 13,410.57 : x
  2. Step 2: Convert to fraction form
    20,486.73/28,253.03 = 13,410.57/x
  3. Step 3: Cross multiply
    20,486.73x = 28,253.03 × 13,410.57
  4. Step 4: Simplify right side
    20,486.73x = 378,889,169.47
  5. Step 5: Solve for x
    x = 378,889,169.47/20,486.73
  6. Step 6: Final answer
    x = 18,494.37

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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.