Home / 18,771.12-25,902.99-11,215.04

Finding the Fourth Proportional to 18,771.12, 25,902.99 and 11,215.04

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Solution

The fourth proportional to 18,771.12, 25,902.99 and 11,215.04 is: 15,476.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.12 : 25,902.99 = 11,215.04 : x
  2. Step 2: Convert to fraction form
    18,771.12/25,902.99 = 11,215.04/x
  3. Step 3: Cross multiply
    18,771.12x = 25,902.99 × 11,215.04
  4. Step 4: Simplify right side
    18,771.12x = 290,502,939.45
  5. Step 5: Solve for x
    x = 290,502,939.45/18,771.12
  6. Step 6: Final answer
    x = 15,476.06

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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.