Home / 20,173.80-30,276.45-13,977.30

Finding the Fourth Proportional to 20,173.80, 30,276.45 and 13,977.30

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Solution

The fourth proportional to 20,173.80, 30,276.45 and 13,977.30 is: 20,976.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,173.80 : 30,276.45 = 13,977.30 : x
  2. Step 2: Convert to fraction form
    20,173.80/30,276.45 = 13,977.30/x
  3. Step 3: Cross multiply
    20,173.80x = 30,276.45 × 13,977.30
  4. Step 4: Simplify right side
    20,173.80x = 423,183,024.59
  5. Step 5: Solve for x
    x = 423,183,024.59/20,173.80
  6. Step 6: Final answer
    x = 20,976.86

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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.