Home / 13,811.76-20,619.18-13,325.76

Finding the Fourth Proportional to 13,811.76, 20,619.18 and 13,325.76

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Solution

The fourth proportional to 13,811.76, 20,619.18 and 13,325.76 is: 19,893.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.76 : 20,619.18 = 13,325.76 : x
  2. Step 2: Convert to fraction form
    13,811.76/20,619.18 = 13,325.76/x
  3. Step 3: Cross multiply
    13,811.76x = 20,619.18 × 13,325.76
  4. Step 4: Simplify right side
    13,811.76x = 274,766,244.08
  5. Step 5: Solve for x
    x = 274,766,244.08/13,811.76
  6. Step 6: Final answer
    x = 19,893.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.