Home / 20,220.99-27,904.58-11,268.30

Finding the Fourth Proportional to 20,220.99, 27,904.58 and 11,268.30

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Solution

The fourth proportional to 20,220.99, 27,904.58 and 11,268.30 is: 15,550.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.99 : 27,904.58 = 11,268.30 : x
  2. Step 2: Convert to fraction form
    20,220.99/27,904.58 = 11,268.30/x
  3. Step 3: Cross multiply
    20,220.99x = 27,904.58 × 11,268.30
  4. Step 4: Simplify right side
    20,220.99x = 314,437,178.81
  5. Step 5: Solve for x
    x = 314,437,178.81/20,220.99
  6. Step 6: Final answer
    x = 15,550.04

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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.