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Finding the Fourth Proportional to 28,671.87, 43,007.81 and 8,952.12

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Solution

The fourth proportional to 28,671.87, 43,007.81 and 8,952.12 is: 13,428.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,671.87 : 43,007.81 = 8,952.12 : x
  2. Step 2: Convert to fraction form
    28,671.87/43,007.81 = 8,952.12/x
  3. Step 3: Cross multiply
    28,671.87x = 43,007.81 × 8,952.12
  4. Step 4: Simplify right side
    28,671.87x = 385,010,870.02
  5. Step 5: Solve for x
    x = 385,010,870.02/28,671.87
  6. Step 6: Final answer
    x = 13,428.17

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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.