Home / 21,033.54-31,561.38-8,562.78

Finding the Fourth Proportional to 21,033.54, 31,561.38 and 8,562.78

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Solution

The fourth proportional to 21,033.54, 31,561.38 and 8,562.78 is: 12,848.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,033.54 : 31,561.38 = 8,562.78 : x
  2. Step 2: Convert to fraction form
    21,033.54/31,561.38 = 8,562.78/x
  3. Step 3: Cross multiply
    21,033.54x = 31,561.38 × 8,562.78
  4. Step 4: Simplify right side
    21,033.54x = 270,253,153.44
  5. Step 5: Solve for x
    x = 270,253,153.44/21,033.54
  6. Step 6: Final answer
    x = 12,848.68

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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.