Home / 20,418.55-28,178.27-11,467.64

Finding the Fourth Proportional to 20,418.55, 28,178.27 and 11,467.64

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Solution

The fourth proportional to 20,418.55, 28,178.27 and 11,467.64 is: 15,825.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,418.55 : 28,178.27 = 11,467.64 : x
  2. Step 2: Convert to fraction form
    20,418.55/28,178.27 = 11,467.64/x
  3. Step 3: Cross multiply
    20,418.55x = 28,178.27 × 11,467.64
  4. Step 4: Simplify right side
    20,418.55x = 323,138,256.18
  5. Step 5: Solve for x
    x = 323,138,256.18/20,418.55
  6. Step 6: Final answer
    x = 15,825.72

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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.