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Finding the Fourth Proportional to 28,558.27, 42,839.99 and 7,498.37

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Solution

The fourth proportional to 28,558.27, 42,839.99 and 7,498.37 is: 11,248.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.27 : 42,839.99 = 7,498.37 : x
  2. Step 2: Convert to fraction form
    28,558.27/42,839.99 = 7,498.37/x
  3. Step 3: Cross multiply
    28,558.27x = 42,839.99 × 7,498.37
  4. Step 4: Simplify right side
    28,558.27x = 321,230,193.54
  5. Step 5: Solve for x
    x = 321,230,193.54/28,558.27
  6. Step 6: Final answer
    x = 11,248.24

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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.