Home / 20,426.94-28,188.96-11,352.25

Finding the Fourth Proportional to 20,426.94, 28,188.96 and 11,352.25

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Solution

The fourth proportional to 20,426.94, 28,188.96 and 11,352.25 is: 15,665.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.94 : 28,188.96 = 11,352.25 : x
  2. Step 2: Convert to fraction form
    20,426.94/28,188.96 = 11,352.25/x
  3. Step 3: Cross multiply
    20,426.94x = 28,188.96 × 11,352.25
  4. Step 4: Simplify right side
    20,426.94x = 320,008,121.16
  5. Step 5: Solve for x
    x = 320,008,121.16/20,426.94
  6. Step 6: Final answer
    x = 15,665.98

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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.