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Finding the Fourth Proportional to 28,302.11, 42,453.11 and 7,525.61

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Solution

The fourth proportional to 28,302.11, 42,453.11 and 7,525.61 is: 11,288.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,302.11 : 42,453.11 = 7,525.61 : x
  2. Step 2: Convert to fraction form
    28,302.11/42,453.11 = 7,525.61/x
  3. Step 3: Cross multiply
    28,302.11x = 42,453.11 × 7,525.61
  4. Step 4: Simplify right side
    28,302.11x = 319,485,299.25
  5. Step 5: Solve for x
    x = 319,485,299.25/28,302.11
  6. Step 6: Final answer
    x = 11,288.39

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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.