Home / 13,396.29-20,085.57-5,990.55

Finding the Fourth Proportional to 13,396.29, 20,085.57 and 5,990.55

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Solution

The fourth proportional to 13,396.29, 20,085.57 and 5,990.55 is: 8,981.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.29 : 20,085.57 = 5,990.55 : x
  2. Step 2: Convert to fraction form
    13,396.29/20,085.57 = 5,990.55/x
  3. Step 3: Cross multiply
    13,396.29x = 20,085.57 × 5,990.55
  4. Step 4: Simplify right side
    13,396.29x = 120,323,611.36
  5. Step 5: Solve for x
    x = 120,323,611.36/13,396.29
  6. Step 6: Final answer
    x = 8,981.86

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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.