Home / 13,629.75-20,444.64-5,421.75

Finding the Fourth Proportional to 13,629.75, 20,444.64 and 5,421.75

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Solution

The fourth proportional to 13,629.75, 20,444.64 and 5,421.75 is: 8,132.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.75 : 20,444.64 = 5,421.75 : x
  2. Step 2: Convert to fraction form
    13,629.75/20,444.64 = 5,421.75/x
  3. Step 3: Cross multiply
    13,629.75x = 20,444.64 × 5,421.75
  4. Step 4: Simplify right side
    13,629.75x = 110,845,726.92
  5. Step 5: Solve for x
    x = 110,845,726.92/13,629.75
  6. Step 6: Final answer
    x = 8,132.63

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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.