Home / 20,109.08-27,752.12-11,158.32

Finding the Fourth Proportional to 20,109.08, 27,752.12 and 11,158.32

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Solution

The fourth proportional to 20,109.08, 27,752.12 and 11,158.32 is: 15,399.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.08 : 27,752.12 = 11,158.32 : x
  2. Step 2: Convert to fraction form
    20,109.08/27,752.12 = 11,158.32/x
  3. Step 3: Cross multiply
    20,109.08x = 27,752.12 × 11,158.32
  4. Step 4: Simplify right side
    20,109.08x = 309,667,125.76
  5. Step 5: Solve for x
    x = 309,667,125.76/20,109.08
  6. Step 6: Final answer
    x = 15,399.37

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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.