Home / 13,586.57-20,383.19-10,977.74

Finding the Fourth Proportional to 13,586.57, 20,383.19 and 10,977.74

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Solution

The fourth proportional to 13,586.57, 20,383.19 and 10,977.74 is: 16,469.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.57 : 20,383.19 = 10,977.74 : x
  2. Step 2: Convert to fraction form
    13,586.57/20,383.19 = 10,977.74/x
  3. Step 3: Cross multiply
    13,586.57x = 20,383.19 × 10,977.74
  4. Step 4: Simplify right side
    13,586.57x = 223,761,203.39
  5. Step 5: Solve for x
    x = 223,761,203.39/13,586.57
  6. Step 6: Final answer
    x = 16,469.30

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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.