Home / 20,089.20-30,138.83-14,177.63

Finding the Fourth Proportional to 20,089.20, 30,138.83 and 14,177.63

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Solution

The fourth proportional to 20,089.20, 30,138.83 and 14,177.63 is: 21,269.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,089.20 : 30,138.83 = 14,177.63 : x
  2. Step 2: Convert to fraction form
    20,089.20/30,138.83 = 14,177.63/x
  3. Step 3: Cross multiply
    20,089.20x = 30,138.83 × 14,177.63
  4. Step 4: Simplify right side
    20,089.20x = 427,297,184.83
  5. Step 5: Solve for x
    x = 427,297,184.83/20,089.20
  6. Step 6: Final answer
    x = 21,269.99

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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.