Home / 20,145.25-30,214.63-14,284.09

Finding the Fourth Proportional to 20,145.25, 30,214.63 and 14,284.09

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Solution

The fourth proportional to 20,145.25, 30,214.63 and 14,284.09 is: 21,423.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.25 : 30,214.63 = 14,284.09 : x
  2. Step 2: Convert to fraction form
    20,145.25/30,214.63 = 14,284.09/x
  3. Step 3: Cross multiply
    20,145.25x = 30,214.63 × 14,284.09
  4. Step 4: Simplify right side
    20,145.25x = 431,588,494.24
  5. Step 5: Solve for x
    x = 431,588,494.24/20,145.25
  6. Step 6: Final answer
    x = 21,423.83

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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.