Home / 13,836.90-19,072.16-9,805.08

Finding the Fourth Proportional to 13,836.90, 19,072.16 and 9,805.08

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Solution

The fourth proportional to 13,836.90, 19,072.16 and 9,805.08 is: 13,514.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,836.90 : 19,072.16 = 9,805.08 : x
  2. Step 2: Convert to fraction form
    13,836.90/19,072.16 = 9,805.08/x
  3. Step 3: Cross multiply
    13,836.90x = 19,072.16 × 9,805.08
  4. Step 4: Simplify right side
    13,836.90x = 187,004,054.57
  5. Step 5: Solve for x
    x = 187,004,054.57/13,836.90
  6. Step 6: Final answer
    x = 13,514.88

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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.