Home / 13,581.42-20,374.56-5,790.84

Finding the Fourth Proportional to 13,581.42, 20,374.56 and 5,790.84

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Solution

The fourth proportional to 13,581.42, 20,374.56 and 5,790.84 is: 8,687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.42 : 20,374.56 = 5,790.84 : x
  2. Step 2: Convert to fraction form
    13,581.42/20,374.56 = 5,790.84/x
  3. Step 3: Cross multiply
    13,581.42x = 20,374.56 × 5,790.84
  4. Step 4: Simplify right side
    13,581.42x = 117,985,817.03
  5. Step 5: Solve for x
    x = 117,985,817.03/13,581.42
  6. Step 6: Final answer
    x = 8,687.30

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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.