Home / 20,102.34-27,740.52-11,150.67

Finding the Fourth Proportional to 20,102.34, 27,740.52 and 11,150.67

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Solution

The fourth proportional to 20,102.34, 27,740.52 and 11,150.67 is: 15,387.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.34 : 27,740.52 = 11,150.67 : x
  2. Step 2: Convert to fraction form
    20,102.34/27,740.52 = 11,150.67/x
  3. Step 3: Cross multiply
    20,102.34x = 27,740.52 × 11,150.67
  4. Step 4: Simplify right side
    20,102.34x = 309,325,384.15
  5. Step 5: Solve for x
    x = 309,325,384.15/20,102.34
  6. Step 6: Final answer
    x = 15,387.53

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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.