Home / 13,723.28-20,581.83-8,178.20

Finding the Fourth Proportional to 13,723.28, 20,581.83 and 8,178.20

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Solution

The fourth proportional to 13,723.28, 20,581.83 and 8,178.20 is: 12,265.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.28 : 20,581.83 = 8,178.20 : x
  2. Step 2: Convert to fraction form
    13,723.28/20,581.83 = 8,178.20/x
  3. Step 3: Cross multiply
    13,723.28x = 20,581.83 × 8,178.20
  4. Step 4: Simplify right side
    13,723.28x = 168,322,322.11
  5. Step 5: Solve for x
    x = 168,322,322.11/13,723.28
  6. Step 6: Final answer
    x = 12,265.46

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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.