Home / 20,313.86-30,458.46-13,285.38

Finding the Fourth Proportional to 20,313.86, 30,458.46 and 13,285.38

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Solution

The fourth proportional to 20,313.86, 30,458.46 and 13,285.38 is: 19,920.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.86 : 30,458.46 = 13,285.38 : x
  2. Step 2: Convert to fraction form
    20,313.86/30,458.46 = 13,285.38/x
  3. Step 3: Cross multiply
    20,313.86x = 30,458.46 × 13,285.38
  4. Step 4: Simplify right side
    20,313.86x = 404,652,215.31
  5. Step 5: Solve for x
    x = 404,652,215.31/20,313.86
  6. Step 6: Final answer
    x = 19,920.01

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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.