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Finding the Fourth Proportional to 28,952.64, 43,358.76 and 20,043

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Solution

The fourth proportional to 28,952.64, 43,358.76 and 20,043 is: 30,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,952.64 : 43,358.76 = 20,043 : x
  2. Step 2: Convert to fraction form
    28,952.64/43,358.76 = 20,043/x
  3. Step 3: Cross multiply
    28,952.64x = 43,358.76 × 20,043
  4. Step 4: Simplify right side
    28,952.64x = 869,039,626.68
  5. Step 5: Solve for x
    x = 869,039,626.68/28,952.64
  6. Step 6: Final answer
    x = 30,015.90

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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.