Home / 13,825.86-20,738.87-3,437.61

Finding the Fourth Proportional to 13,825.86, 20,738.87 and 3,437.61

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Solution

The fourth proportional to 13,825.86, 20,738.87 and 3,437.61 is: 5,156.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.86 : 20,738.87 = 3,437.61 : x
  2. Step 2: Convert to fraction form
    13,825.86/20,738.87 = 3,437.61/x
  3. Step 3: Cross multiply
    13,825.86x = 20,738.87 × 3,437.61
  4. Step 4: Simplify right side
    13,825.86x = 71,292,129.71
  5. Step 5: Solve for x
    x = 71,292,129.71/13,825.86
  6. Step 6: Final answer
    x = 5,156.43

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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.