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Finding the Fourth Proportional to 18,759.80, 25,884.78 and 10,374.68

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Solution

The fourth proportional to 18,759.80, 25,884.78 and 10,374.68 is: 14,314.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759.80 : 25,884.78 = 10,374.68 : x
  2. Step 2: Convert to fraction form
    18,759.80/25,884.78 = 10,374.68/x
  3. Step 3: Cross multiply
    18,759.80x = 25,884.78 × 10,374.68
  4. Step 4: Simplify right side
    18,759.80x = 268,546,309.37
  5. Step 5: Solve for x
    x = 268,546,309.37/18,759.80
  6. Step 6: Final answer
    x = 14,314.99

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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.