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Finding the Fourth Proportional to 15,027.99, 20,738.52 and 8,981.00

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Solution

The fourth proportional to 15,027.99, 20,738.52 and 8,981.00 is: 12,393.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.99 : 20,738.52 = 8,981.00 : x
  2. Step 2: Convert to fraction form
    15,027.99/20,738.52 = 8,981.00/x
  3. Step 3: Cross multiply
    15,027.99x = 20,738.52 × 8,981.00
  4. Step 4: Simplify right side
    15,027.99x = 186,252,544.43
  5. Step 5: Solve for x
    x = 186,252,544.43/15,027.99
  6. Step 6: Final answer
    x = 12,393.71

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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.