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Finding the Fourth Proportional to 28,283.58, 42,425.37 and 8,562.11

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Solution

The fourth proportional to 28,283.58, 42,425.37 and 8,562.11 is: 12,843.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,283.58 : 42,425.37 = 8,562.11 : x
  2. Step 2: Convert to fraction form
    28,283.58/42,425.37 = 8,562.11/x
  3. Step 3: Cross multiply
    28,283.58x = 42,425.37 × 8,562.11
  4. Step 4: Simplify right side
    28,283.58x = 363,250,472.60
  5. Step 5: Solve for x
    x = 363,250,472.60/28,283.58
  6. Step 6: Final answer
    x = 12,843.16

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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.