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Finding the Fourth Proportional to 15,027.92, 20,729.74 and 9,055.80

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Solution

The fourth proportional to 15,027.92, 20,729.74 and 9,055.80 is: 12,491.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.92 : 20,729.74 = 9,055.80 : x
  2. Step 2: Convert to fraction form
    15,027.92/20,729.74 = 9,055.80/x
  3. Step 3: Cross multiply
    15,027.92x = 20,729.74 × 9,055.80
  4. Step 4: Simplify right side
    15,027.92x = 187,724,379.49
  5. Step 5: Solve for x
    x = 187,724,379.49/15,027.92
  6. Step 6: Final answer
    x = 12,491.71

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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.