Home / 13,972.61-20,950.80-5,645.81

Finding the Fourth Proportional to 13,972.61, 20,950.80 and 5,645.81

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Solution

The fourth proportional to 13,972.61, 20,950.80 and 5,645.81 is: 8,465.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.61 : 20,950.80 = 5,645.81 : x
  2. Step 2: Convert to fraction form
    13,972.61/20,950.80 = 5,645.81/x
  3. Step 3: Cross multiply
    13,972.61x = 20,950.80 × 5,645.81
  4. Step 4: Simplify right side
    13,972.61x = 118,284,131.39
  5. Step 5: Solve for x
    x = 118,284,131.39/13,972.61
  6. Step 6: Final answer
    x = 8,465.43

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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.