Home / 13,931.48-20,896.99-5,611.30

Finding the Fourth Proportional to 13,931.48, 20,896.99 and 5,611.30

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Solution

The fourth proportional to 13,931.48, 20,896.99 and 5,611.30 is: 8,416.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.48 : 20,896.99 = 5,611.30 : x
  2. Step 2: Convert to fraction form
    13,931.48/20,896.99 = 5,611.30/x
  3. Step 3: Cross multiply
    13,931.48x = 20,896.99 × 5,611.30
  4. Step 4: Simplify right side
    13,931.48x = 117,259,213.72
  5. Step 5: Solve for x
    x = 117,259,213.72/13,931.48
  6. Step 6: Final answer
    x = 8,416.85

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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.