Home / 18,817.02-28,234.80-13,305.78

Finding the Fourth Proportional to 18,817.02, 28,234.80 and 13,305.78

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Solution

The fourth proportional to 18,817.02, 28,234.80 and 13,305.78 is: 19,965.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,817.02 : 28,234.80 = 13,305.78 : x
  2. Step 2: Convert to fraction form
    18,817.02/28,234.80 = 13,305.78/x
  3. Step 3: Cross multiply
    18,817.02x = 28,234.80 × 13,305.78
  4. Step 4: Simplify right side
    18,817.02x = 375,686,037.14
  5. Step 5: Solve for x
    x = 375,686,037.14/18,817.02
  6. Step 6: Final answer
    x = 19,965.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.