Home / 19,792.79-27,311.51-15,769.82

Finding the Fourth Proportional to 19,792.79, 27,311.51 and 15,769.82

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Solution

The fourth proportional to 19,792.79, 27,311.51 and 15,769.82 is: 21,760.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,792.79 : 27,311.51 = 15,769.82 : x
  2. Step 2: Convert to fraction form
    19,792.79/27,311.51 = 15,769.82/x
  3. Step 3: Cross multiply
    19,792.79x = 27,311.51 × 15,769.82
  4. Step 4: Simplify right side
    19,792.79x = 430,697,704.33
  5. Step 5: Solve for x
    x = 430,697,704.33/19,792.79
  6. Step 6: Final answer
    x = 21,760.33

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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.