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Finding the Fourth Proportional to 15,047.30, 20,764.96 and 8,673.82

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Solution

The fourth proportional to 15,047.30, 20,764.96 and 8,673.82 is: 11,969.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,047.30 : 20,764.96 = 8,673.82 : x
  2. Step 2: Convert to fraction form
    15,047.30/20,764.96 = 8,673.82/x
  3. Step 3: Cross multiply
    15,047.30x = 20,764.96 × 8,673.82
  4. Step 4: Simplify right side
    15,047.30x = 180,111,451.75
  5. Step 5: Solve for x
    x = 180,111,451.75/15,047.30
  6. Step 6: Final answer
    x = 11,969.68

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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.