Home / 13,491.50-20,239.58-4,131.29

Finding the Fourth Proportional to 13,491.50, 20,239.58 and 4,131.29

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Solution

The fourth proportional to 13,491.50, 20,239.58 and 4,131.29 is: 6,197.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.50 : 20,239.58 = 4,131.29 : x
  2. Step 2: Convert to fraction form
    13,491.50/20,239.58 = 4,131.29/x
  3. Step 3: Cross multiply
    13,491.50x = 20,239.58 × 4,131.29
  4. Step 4: Simplify right side
    13,491.50x = 83,615,635.39
  5. Step 5: Solve for x
    x = 83,615,635.39/13,491.50
  6. Step 6: Final answer
    x = 6,197.66

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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.