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Finding the Fourth Proportional to 28,001, 42,005.86 and 10,473.32

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Solution

The fourth proportional to 28,001, 42,005.86 and 10,473.32 is: 15,711.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001 : 42,005.86 = 10,473.32 : x
  2. Step 2: Convert to fraction form
    28,001/42,005.86 = 10,473.32/x
  3. Step 3: Cross multiply
    28,001x = 42,005.86 × 10,473.32
  4. Step 4: Simplify right side
    28,001x = 439,940,813.66
  5. Step 5: Solve for x
    x = 439,940,813.66/28,001
  6. Step 6: Final answer
    x = 15,711.61

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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.