Home / 20,550.49-28,359.40-11,475.99

Finding the Fourth Proportional to 20,550.49, 28,359.40 and 11,475.99

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Solution

The fourth proportional to 20,550.49, 28,359.40 and 11,475.99 is: 15,836.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.49 : 28,359.40 = 11,475.99 : x
  2. Step 2: Convert to fraction form
    20,550.49/28,359.40 = 11,475.99/x
  3. Step 3: Cross multiply
    20,550.49x = 28,359.40 × 11,475.99
  4. Step 4: Simplify right side
    20,550.49x = 325,452,190.81
  5. Step 5: Solve for x
    x = 325,452,190.81/20,550.49
  6. Step 6: Final answer
    x = 15,836.71

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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.