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Finding the Fourth Proportional to 18,763.64, 25,900.33 and 10,809.03

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Solution

The fourth proportional to 18,763.64, 25,900.33 and 10,809.03 is: 14,920.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,763.64 : 25,900.33 = 10,809.03 : x
  2. Step 2: Convert to fraction form
    18,763.64/25,900.33 = 10,809.03/x
  3. Step 3: Cross multiply
    18,763.64x = 25,900.33 × 10,809.03
  4. Step 4: Simplify right side
    18,763.64x = 279,957,416.96
  5. Step 5: Solve for x
    x = 279,957,416.96/18,763.64
  6. Step 6: Final answer
    x = 14,920.21

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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.