Home / 20,105.24-30,170.68-14,178.47

Finding the Fourth Proportional to 20,105.24, 30,170.68 and 14,178.47

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Solution

The fourth proportional to 20,105.24, 30,170.68 and 14,178.47 is: 21,276.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.24 : 30,170.68 = 14,178.47 : x
  2. Step 2: Convert to fraction form
    20,105.24/30,170.68 = 14,178.47/x
  3. Step 3: Cross multiply
    20,105.24x = 30,170.68 × 14,178.47
  4. Step 4: Simplify right side
    20,105.24x = 427,773,894.96
  5. Step 5: Solve for x
    x = 427,773,894.96/20,105.24
  6. Step 6: Final answer
    x = 21,276.74

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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.