Home / 20,136.60-27,788.78-11,184.68

Finding the Fourth Proportional to 20,136.60, 27,788.78 and 11,184.68

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Solution

The fourth proportional to 20,136.60, 27,788.78 and 11,184.68 is: 15,435.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.60 : 27,788.78 = 11,184.68 : x
  2. Step 2: Convert to fraction form
    20,136.60/27,788.78 = 11,184.68/x
  3. Step 3: Cross multiply
    20,136.60x = 27,788.78 × 11,184.68
  4. Step 4: Simplify right side
    20,136.60x = 310,808,611.89
  5. Step 5: Solve for x
    x = 310,808,611.89/20,136.60
  6. Step 6: Final answer
    x = 15,435.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.