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Finding the Fourth Proportional to 18,305.80, 25,262.12 and 10,348.80

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Solution

The fourth proportional to 18,305.80, 25,262.12 and 10,348.80 is: 14,281.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.80 : 25,262.12 = 10,348.80 : x
  2. Step 2: Convert to fraction form
    18,305.80/25,262.12 = 10,348.80/x
  3. Step 3: Cross multiply
    18,305.80x = 25,262.12 × 10,348.80
  4. Step 4: Simplify right side
    18,305.80x = 261,432,627.46
  5. Step 5: Solve for x
    x = 261,432,627.46/18,305.80
  6. Step 6: Final answer
    x = 14,281.41

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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.