Home / 20,905.06-28,849.09-11,473.63

Finding the Fourth Proportional to 20,905.06, 28,849.09 and 11,473.63

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Solution

The fourth proportional to 20,905.06, 28,849.09 and 11,473.63 is: 15,833.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,905.06 : 28,849.09 = 11,473.63 : x
  2. Step 2: Convert to fraction form
    20,905.06/28,849.09 = 11,473.63/x
  3. Step 3: Cross multiply
    20,905.06x = 28,849.09 × 11,473.63
  4. Step 4: Simplify right side
    20,905.06x = 331,003,784.50
  5. Step 5: Solve for x
    x = 331,003,784.50/20,905.06
  6. Step 6: Final answer
    x = 15,833.67

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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.