Home / 20,468.08-28,247.16-11,515.96

Finding the Fourth Proportional to 20,468.08, 28,247.16 and 11,515.96

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Solution

The fourth proportional to 20,468.08, 28,247.16 and 11,515.96 is: 15,892.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,468.08 : 28,247.16 = 11,515.96 : x
  2. Step 2: Convert to fraction form
    20,468.08/28,247.16 = 11,515.96/x
  3. Step 3: Cross multiply
    20,468.08x = 28,247.16 × 11,515.96
  4. Step 4: Simplify right side
    20,468.08x = 325,293,164.67
  5. Step 5: Solve for x
    x = 325,293,164.67/20,468.08
  6. Step 6: Final answer
    x = 15,892.71

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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.