Home / 18,505.09-25,537.64-10,121.59

Finding the Fourth Proportional to 18,505.09, 25,537.64 and 10,121.59

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Solution

The fourth proportional to 18,505.09, 25,537.64 and 10,121.59 is: 13,968.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,505.09 : 25,537.64 = 10,121.59 : x
  2. Step 2: Convert to fraction form
    18,505.09/25,537.64 = 10,121.59/x
  3. Step 3: Cross multiply
    18,505.09x = 25,537.64 × 10,121.59
  4. Step 4: Simplify right side
    18,505.09x = 258,481,521.65
  5. Step 5: Solve for x
    x = 258,481,521.65/18,505.09
  6. Step 6: Final answer
    x = 13,968.13

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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.