Home / 20,998.11-28,977.39-11,566.67

Finding the Fourth Proportional to 20,998.11, 28,977.39 and 11,566.67

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Solution

The fourth proportional to 20,998.11, 28,977.39 and 11,566.67 is: 15,962.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998.11 : 28,977.39 = 11,566.67 : x
  2. Step 2: Convert to fraction form
    20,998.11/28,977.39 = 11,566.67/x
  3. Step 3: Cross multiply
    20,998.11x = 28,977.39 × 11,566.67
  4. Step 4: Simplify right side
    20,998.11x = 335,171,994.49
  5. Step 5: Solve for x
    x = 335,171,994.49/20,998.11
  6. Step 6: Final answer
    x = 15,962.01

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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.