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Finding the Fourth Proportional to 28,574.96, 42,873.36 and 11,057.12

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Solution

The fourth proportional to 28,574.96, 42,873.36 and 11,057.12 is: 16,589.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,574.96 : 42,873.36 = 11,057.12 : x
  2. Step 2: Convert to fraction form
    28,574.96/42,873.36 = 11,057.12/x
  3. Step 3: Cross multiply
    28,574.96x = 42,873.36 × 11,057.12
  4. Step 4: Simplify right side
    28,574.96x = 474,055,886.32
  5. Step 5: Solve for x
    x = 474,055,886.32/28,574.96
  6. Step 6: Final answer
    x = 16,589.91

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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.