Home / 20,136.95-27,789.30-11,184.83

Finding the Fourth Proportional to 20,136.95, 27,789.30 and 11,184.83

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Solution

The fourth proportional to 20,136.95, 27,789.30 and 11,184.83 is: 15,435.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.95 : 27,789.30 = 11,184.83 : x
  2. Step 2: Convert to fraction form
    20,136.95/27,789.30 = 11,184.83/x
  3. Step 3: Cross multiply
    20,136.95x = 27,789.30 × 11,184.83
  4. Step 4: Simplify right side
    20,136.95x = 310,818,457.37
  5. Step 5: Solve for x
    x = 310,818,457.37/20,136.95
  6. Step 6: Final answer
    x = 15,435.23

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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.