Home / 28,688.91-43,015.75-9,960.90

Finding the Fourth Proportional to 28,688.91, 43,015.75 and 9,960.90

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Solution

The fourth proportional to 28,688.91, 43,015.75 and 9,960.90 is: 14,935.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688.91 : 43,015.75 = 9,960.90 : x
  2. Step 2: Convert to fraction form
    28,688.91/43,015.75 = 9,960.90/x
  3. Step 3: Cross multiply
    28,688.91x = 43,015.75 × 9,960.90
  4. Step 4: Simplify right side
    28,688.91x = 428,475,584.18
  5. Step 5: Solve for x
    x = 428,475,584.18/28,688.91
  6. Step 6: Final answer
    x = 14,935.23

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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.