Home / 20,705.11-28,573.04-11,273.67

Finding the Fourth Proportional to 20,705.11, 28,573.04 and 11,273.67

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Solution

The fourth proportional to 20,705.11, 28,573.04 and 11,273.67 is: 15,557.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.11 : 28,573.04 = 11,273.67 : x
  2. Step 2: Convert to fraction form
    20,705.11/28,573.04 = 11,273.67/x
  3. Step 3: Cross multiply
    20,705.11x = 28,573.04 × 11,273.67
  4. Step 4: Simplify right side
    20,705.11x = 322,123,052.04
  5. Step 5: Solve for x
    x = 322,123,052.04/20,705.11
  6. Step 6: Final answer
    x = 15,557.66

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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.