Home / 20,160.08-27,813.54-12,199.40

Finding the Fourth Proportional to 20,160.08, 27,813.54 and 12,199.40

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Solution

The fourth proportional to 20,160.08, 27,813.54 and 12,199.40 is: 16,830.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.08 : 27,813.54 = 12,199.40 : x
  2. Step 2: Convert to fraction form
    20,160.08/27,813.54 = 12,199.40/x
  3. Step 3: Cross multiply
    20,160.08x = 27,813.54 × 12,199.40
  4. Step 4: Simplify right side
    20,160.08x = 339,308,499.88
  5. Step 5: Solve for x
    x = 339,308,499.88/20,160.08
  6. Step 6: Final answer
    x = 16,830.71

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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.