Home / 27,960.96-38,560.32-18,391.68

Finding the Fourth Proportional to 27,960.96, 38,560.32 and 18,391.68

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Solution

The fourth proportional to 27,960.96, 38,560.32 and 18,391.68 is: 25,363.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,960.96 : 38,560.32 = 18,391.68 : x
  2. Step 2: Convert to fraction form
    27,960.96/38,560.32 = 18,391.68/x
  3. Step 3: Cross multiply
    27,960.96x = 38,560.32 × 18,391.68
  4. Step 4: Simplify right side
    27,960.96x = 709,189,066.14
  5. Step 5: Solve for x
    x = 709,189,066.14/27,960.96
  6. Step 6: Final answer
    x = 25,363.54

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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.