Home / 20,718.94-28,591.08-11,765.30

Finding the Fourth Proportional to 20,718.94, 28,591.08 and 11,765.30

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Solution

The fourth proportional to 20,718.94, 28,591.08 and 11,765.30 is: 16,235.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.94 : 28,591.08 = 11,765.30 : x
  2. Step 2: Convert to fraction form
    20,718.94/28,591.08 = 11,765.30/x
  3. Step 3: Cross multiply
    20,718.94x = 28,591.08 × 11,765.30
  4. Step 4: Simplify right side
    20,718.94x = 336,382,607.27
  5. Step 5: Solve for x
    x = 336,382,607.27/20,718.94
  6. Step 6: Final answer
    x = 16,235.51

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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.