Home / 20,155.07-27,811.99-11,656.55

Finding the Fourth Proportional to 20,155.07, 27,811.99 and 11,656.55

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Solution

The fourth proportional to 20,155.07, 27,811.99 and 11,656.55 is: 16,084.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.07 : 27,811.99 = 11,656.55 : x
  2. Step 2: Convert to fraction form
    20,155.07/27,811.99 = 11,656.55/x
  3. Step 3: Cross multiply
    20,155.07x = 27,811.99 × 11,656.55
  4. Step 4: Simplify right side
    20,155.07x = 324,191,892.42
  5. Step 5: Solve for x
    x = 324,191,892.42/20,155.07
  6. Step 6: Final answer
    x = 16,084.88

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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.