Home / 20,418.71-30,609.56-14,181.66

Finding the Fourth Proportional to 20,418.71, 30,609.56 and 14,181.66

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Solution

The fourth proportional to 20,418.71, 30,609.56 and 14,181.66 is: 21,259.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,418.71 : 30,609.56 = 14,181.66 : x
  2. Step 2: Convert to fraction form
    20,418.71/30,609.56 = 14,181.66/x
  3. Step 3: Cross multiply
    20,418.71x = 30,609.56 × 14,181.66
  4. Step 4: Simplify right side
    20,418.71x = 434,094,464.11
  5. Step 5: Solve for x
    x = 434,094,464.11/20,418.71
  6. Step 6: Final answer
    x = 21,259.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.