Home / 20,155.69-27,817.10-12,202.30

Finding the Fourth Proportional to 20,155.69, 27,817.10 and 12,202.30

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Solution

The fourth proportional to 20,155.69, 27,817.10 and 12,202.30 is: 16,840.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.69 : 27,817.10 = 12,202.30 : x
  2. Step 2: Convert to fraction form
    20,155.69/27,817.10 = 12,202.30/x
  3. Step 3: Cross multiply
    20,155.69x = 27,817.10 × 12,202.30
  4. Step 4: Simplify right side
    20,155.69x = 339,432,560.29
  5. Step 5: Solve for x
    x = 339,432,560.29/20,155.69
  6. Step 6: Final answer
    x = 16,840.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.