Home / 13,581.99-20,343.69-11,215.44

Finding the Fourth Proportional to 13,581.99, 20,343.69 and 11,215.44

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Solution

The fourth proportional to 13,581.99, 20,343.69 and 11,215.44 is: 16,798.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.99 : 20,343.69 = 11,215.44 : x
  2. Step 2: Convert to fraction form
    13,581.99/20,343.69 = 11,215.44/x
  3. Step 3: Cross multiply
    13,581.99x = 20,343.69 × 11,215.44
  4. Step 4: Simplify right side
    13,581.99x = 228,163,434.57
  5. Step 5: Solve for x
    x = 228,163,434.57/13,581.99
  6. Step 6: Final answer
    x = 16,798.97

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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.