Home / 27,749.62-38,292.84-15,812.86

Finding the Fourth Proportional to 27,749.62, 38,292.84 and 15,812.86

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Solution

The fourth proportional to 27,749.62, 38,292.84 and 15,812.86 is: 21,820.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,749.62 : 38,292.84 = 15,812.86 : x
  2. Step 2: Convert to fraction form
    27,749.62/38,292.84 = 15,812.86/x
  3. Step 3: Cross multiply
    27,749.62x = 38,292.84 × 15,812.86
  4. Step 4: Simplify right side
    27,749.62x = 605,519,317.92
  5. Step 5: Solve for x
    x = 605,519,317.92/27,749.62
  6. Step 6: Final answer
    x = 21,820.81

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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.