Home / 13,586.52-20,371.40-8,900.80

Finding the Fourth Proportional to 13,586.52, 20,371.40 and 8,900.80

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Solution

The fourth proportional to 13,586.52, 20,371.40 and 8,900.80 is: 13,345.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.52 : 20,371.40 = 8,900.80 : x
  2. Step 2: Convert to fraction form
    13,586.52/20,371.40 = 8,900.80/x
  3. Step 3: Cross multiply
    13,586.52x = 20,371.40 × 8,900.80
  4. Step 4: Simplify right side
    13,586.52x = 181,321,757.12
  5. Step 5: Solve for x
    x = 181,321,757.12/13,586.52
  6. Step 6: Final answer
    x = 13,345.71

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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.