Home / 20,426.54-28,189.08-11,474.82

Finding the Fourth Proportional to 20,426.54, 28,189.08 and 11,474.82

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Solution

The fourth proportional to 20,426.54, 28,189.08 and 11,474.82 is: 15,835.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.54 : 28,189.08 = 11,474.82 : x
  2. Step 2: Convert to fraction form
    20,426.54/28,189.08 = 11,474.82/x
  3. Step 3: Cross multiply
    20,426.54x = 28,189.08 × 11,474.82
  4. Step 4: Simplify right side
    20,426.54x = 323,464,618.97
  5. Step 5: Solve for x
    x = 323,464,618.97/20,426.54
  6. Step 6: Final answer
    x = 15,835.51

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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.