Home / 18,285.09-25,233.90-11,215.41

Finding the Fourth Proportional to 18,285.09, 25,233.90 and 11,215.41

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Solution

The fourth proportional to 18,285.09, 25,233.90 and 11,215.41 is: 15,477.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,285.09 : 25,233.90 = 11,215.41 : x
  2. Step 2: Convert to fraction form
    18,285.09/25,233.90 = 11,215.41/x
  3. Step 3: Cross multiply
    18,285.09x = 25,233.90 × 11,215.41
  4. Step 4: Simplify right side
    18,285.09x = 283,008,534.40
  5. Step 5: Solve for x
    x = 283,008,534.40/18,285.09
  6. Step 6: Final answer
    x = 15,477.56

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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.