Home / 20,145.85-27,800.67-11,071.24

Finding the Fourth Proportional to 20,145.85, 27,800.67 and 11,071.24

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Solution

The fourth proportional to 20,145.85, 27,800.67 and 11,071.24 is: 15,277.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.85 : 27,800.67 = 11,071.24 : x
  2. Step 2: Convert to fraction form
    20,145.85/27,800.67 = 11,071.24/x
  3. Step 3: Cross multiply
    20,145.85x = 27,800.67 × 11,071.24
  4. Step 4: Simplify right side
    20,145.85x = 307,787,889.73
  5. Step 5: Solve for x
    x = 307,787,889.73/20,145.85
  6. Step 6: Final answer
    x = 15,277.98

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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.