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Finding the Fourth Proportional to 28,424.77, 42,624.77 and 8,157.06

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Solution

The fourth proportional to 28,424.77, 42,624.77 and 8,157.06 is: 12,232.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,424.77 : 42,624.77 = 8,157.06 : x
  2. Step 2: Convert to fraction form
    28,424.77/42,624.77 = 8,157.06/x
  3. Step 3: Cross multiply
    28,424.77x = 42,624.77 × 8,157.06
  4. Step 4: Simplify right side
    28,424.77x = 347,692,765.59
  5. Step 5: Solve for x
    x = 347,692,765.59/28,424.77
  6. Step 6: Final answer
    x = 12,232.04

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