Home / 13,344.63-20,019.78-3,985.38

Finding the Fourth Proportional to 13,344.63, 20,019.78 and 3,985.38

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Solution

The fourth proportional to 13,344.63, 20,019.78 and 3,985.38 is: 5,978.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,344.63 : 20,019.78 = 3,985.38 : x
  2. Step 2: Convert to fraction form
    13,344.63/20,019.78 = 3,985.38/x
  3. Step 3: Cross multiply
    13,344.63x = 20,019.78 × 3,985.38
  4. Step 4: Simplify right side
    13,344.63x = 79,786,430.82
  5. Step 5: Solve for x
    x = 79,786,430.82/13,344.63
  6. Step 6: Final answer
    x = 5,978.92

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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.