Home / 18,816.28-25,960.62-12,529.72

Finding the Fourth Proportional to 18,816.28, 25,960.62 and 12,529.72

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Solution

The fourth proportional to 18,816.28, 25,960.62 and 12,529.72 is: 17,287.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,816.28 : 25,960.62 = 12,529.72 : x
  2. Step 2: Convert to fraction form
    18,816.28/25,960.62 = 12,529.72/x
  3. Step 3: Cross multiply
    18,816.28x = 25,960.62 × 12,529.72
  4. Step 4: Simplify right side
    18,816.28x = 325,279,299.63
  5. Step 5: Solve for x
    x = 325,279,299.63/18,816.28
  6. Step 6: Final answer
    x = 17,287.12

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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.