Home / 18,945.12-26,144.38-10,992.08

Finding the Fourth Proportional to 18,945.12, 26,144.38 and 10,992.08

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Solution

The fourth proportional to 18,945.12, 26,144.38 and 10,992.08 is: 15,169.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.12 : 26,144.38 = 10,992.08 : x
  2. Step 2: Convert to fraction form
    18,945.12/26,144.38 = 10,992.08/x
  3. Step 3: Cross multiply
    18,945.12x = 26,144.38 × 10,992.08
  4. Step 4: Simplify right side
    18,945.12x = 287,381,116.51
  5. Step 5: Solve for x
    x = 287,381,116.51/18,945.12
  6. Step 6: Final answer
    x = 15,169.14

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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.