Home / 18,520.68-27,783.76-5,371.35

Finding the Fourth Proportional to 18,520.68, 27,783.76 and 5,371.35

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Solution

The fourth proportional to 18,520.68, 27,783.76 and 5,371.35 is: 8,057.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.68 : 27,783.76 = 5,371.35 : x
  2. Step 2: Convert to fraction form
    18,520.68/27,783.76 = 5,371.35/x
  3. Step 3: Cross multiply
    18,520.68x = 27,783.76 × 5,371.35
  4. Step 4: Simplify right side
    18,520.68x = 149,236,299.28
  5. Step 5: Solve for x
    x = 149,236,299.28/18,520.68
  6. Step 6: Final answer
    x = 8,057.82

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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.