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Finding the Fourth Proportional to 20,559, 28,371.23 and 11,606.31

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Solution

The fourth proportional to 20,559, 28,371.23 and 11,606.31 is: 16,016.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559 : 28,371.23 = 11,606.31 : x
  2. Step 2: Convert to fraction form
    20,559/28,371.23 = 11,606.31/x
  3. Step 3: Cross multiply
    20,559x = 28,371.23 × 11,606.31
  4. Step 4: Simplify right side
    20,559x = 329,285,290.46
  5. Step 5: Solve for x
    x = 329,285,290.46/20,559
  6. Step 6: Final answer
    x = 16,016.60

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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.