Home / 20,102.62-27,742.95-11,150.50

Finding the Fourth Proportional to 20,102.62, 27,742.95 and 11,150.50

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Solution

The fourth proportional to 20,102.62, 27,742.95 and 11,150.50 is: 15,388.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.62 : 27,742.95 = 11,150.50 : x
  2. Step 2: Convert to fraction form
    20,102.62/27,742.95 = 11,150.50/x
  3. Step 3: Cross multiply
    20,102.62x = 27,742.95 × 11,150.50
  4. Step 4: Simplify right side
    20,102.62x = 309,347,569.51
  5. Step 5: Solve for x
    x = 309,347,569.51/20,102.62
  6. Step 6: Final answer
    x = 15,388.42

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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.