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Finding the Fourth Proportional to 18,776.80, 25,903.23 and 10,814.41

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Solution

The fourth proportional to 18,776.80, 25,903.23 and 10,814.41 is: 14,918.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,776.80 : 25,903.23 = 10,814.41 : x
  2. Step 2: Convert to fraction form
    18,776.80/25,903.23 = 10,814.41/x
  3. Step 3: Cross multiply
    18,776.80x = 25,903.23 × 10,814.41
  4. Step 4: Simplify right side
    18,776.80x = 280,128,149.54
  5. Step 5: Solve for x
    x = 280,128,149.54/18,776.80
  6. Step 6: Final answer
    x = 14,918.84

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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.