Home / 20,977.36-28,949.20-11,545.96

Finding the Fourth Proportional to 20,977.36, 28,949.20 and 11,545.96

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Solution

The fourth proportional to 20,977.36, 28,949.20 and 11,545.96 is: 15,933.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.36 : 28,949.20 = 11,545.96 : x
  2. Step 2: Convert to fraction form
    20,977.36/28,949.20 = 11,545.96/x
  3. Step 3: Cross multiply
    20,977.36x = 28,949.20 × 11,545.96
  4. Step 4: Simplify right side
    20,977.36x = 334,246,305.23
  5. Step 5: Solve for x
    x = 334,246,305.23/20,977.36
  6. Step 6: Final answer
    x = 15,933.67

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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.