Home / 13,185.86-19,778.80-3,325.24

Finding the Fourth Proportional to 13,185.86, 19,778.80 and 3,325.24

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Solution

The fourth proportional to 13,185.86, 19,778.80 and 3,325.24 is: 4,987.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.86 : 19,778.80 = 3,325.24 : x
  2. Step 2: Convert to fraction form
    13,185.86/19,778.80 = 3,325.24/x
  3. Step 3: Cross multiply
    13,185.86x = 19,778.80 × 3,325.24
  4. Step 4: Simplify right side
    13,185.86x = 65,769,256.91
  5. Step 5: Solve for x
    x = 65,769,256.91/13,185.86
  6. Step 6: Final answer
    x = 4,987.86

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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.