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Finding the Fourth Proportional to 25,719.78, 35,508.78 and 16,782.78

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Solution

The fourth proportional to 25,719.78, 35,508.78 and 16,782.78 is: 23,170.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,719.78 : 35,508.78 = 16,782.78 : x
  2. Step 2: Convert to fraction form
    25,719.78/35,508.78 = 16,782.78/x
  3. Step 3: Cross multiply
    25,719.78x = 35,508.78 × 16,782.78
  4. Step 4: Simplify right side
    25,719.78x = 595,936,042.81
  5. Step 5: Solve for x
    x = 595,936,042.81/25,719.78
  6. Step 6: Final answer
    x = 23,170.34

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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.