Home / 20,101.87-27,742.28-11,152.25

Finding the Fourth Proportional to 20,101.87, 27,742.28 and 11,152.25

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Solution

The fourth proportional to 20,101.87, 27,742.28 and 11,152.25 is: 15,391.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.87 : 27,742.28 = 11,152.25 : x
  2. Step 2: Convert to fraction form
    20,101.87/27,742.28 = 11,152.25/x
  3. Step 3: Cross multiply
    20,101.87x = 27,742.28 × 11,152.25
  4. Step 4: Simplify right side
    20,101.87x = 309,388,842.13
  5. Step 5: Solve for x
    x = 309,388,842.13/20,101.87
  6. Step 6: Final answer
    x = 15,391.05

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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.