Home / 18,287.15-27,383.90-12,657.03

Finding the Fourth Proportional to 18,287.15, 27,383.90 and 12,657.03

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Solution

The fourth proportional to 18,287.15, 27,383.90 and 12,657.03 is: 18,953.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.15 : 27,383.90 = 12,657.03 : x
  2. Step 2: Convert to fraction form
    18,287.15/27,383.90 = 12,657.03/x
  3. Step 3: Cross multiply
    18,287.15x = 27,383.90 × 12,657.03
  4. Step 4: Simplify right side
    18,287.15x = 346,598,780.53
  5. Step 5: Solve for x
    x = 346,598,780.53/18,287.15
  6. Step 6: Final answer
    x = 18,953.14

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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.