Home / 20,162.81-27,824.33-11,209.16

Finding the Fourth Proportional to 20,162.81, 27,824.33 and 11,209.16

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Solution

The fourth proportional to 20,162.81, 27,824.33 and 11,209.16 is: 15,468.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,162.81 : 27,824.33 = 11,209.16 : x
  2. Step 2: Convert to fraction form
    20,162.81/27,824.33 = 11,209.16/x
  3. Step 3: Cross multiply
    20,162.81x = 27,824.33 × 11,209.16
  4. Step 4: Simplify right side
    20,162.81x = 311,887,464.45
  5. Step 5: Solve for x
    x = 311,887,464.45/20,162.81
  6. Step 6: Final answer
    x = 15,468.45

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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.