Home / 16,821.78-25,214.85-5,718.30

Finding the Fourth Proportional to 16,821.78, 25,214.85 and 5,718.30

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Solution

The fourth proportional to 16,821.78, 25,214.85 and 5,718.30 is: 8,571.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,821.78 : 25,214.85 = 5,718.30 : x
  2. Step 2: Convert to fraction form
    16,821.78/25,214.85 = 5,718.30/x
  3. Step 3: Cross multiply
    16,821.78x = 25,214.85 × 5,718.30
  4. Step 4: Simplify right side
    16,821.78x = 144,186,076.76
  5. Step 5: Solve for x
    x = 144,186,076.76/16,821.78
  6. Step 6: Final answer
    x = 8,571.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.