Home / 20,314.86-30,459.96-13,286.38

Finding the Fourth Proportional to 20,314.86, 30,459.96 and 13,286.38

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Solution

The fourth proportional to 20,314.86, 30,459.96 and 13,286.38 is: 19,921.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,314.86 : 30,459.96 = 13,286.38 : x
  2. Step 2: Convert to fraction form
    20,314.86/30,459.96 = 13,286.38/x
  3. Step 3: Cross multiply
    20,314.86x = 30,459.96 × 13,286.38
  4. Step 4: Simplify right side
    20,314.86x = 404,702,603.34
  5. Step 5: Solve for x
    x = 404,702,603.34/20,314.86
  6. Step 6: Final answer
    x = 19,921.51

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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.