Home / 28,688.66-43,015.38-9,960.65

Finding the Fourth Proportional to 28,688.66, 43,015.38 and 9,960.65

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Solution

The fourth proportional to 28,688.66, 43,015.38 and 9,960.65 is: 14,934.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688.66 : 43,015.38 = 9,960.65 : x
  2. Step 2: Convert to fraction form
    28,688.66/43,015.38 = 9,960.65/x
  3. Step 3: Cross multiply
    28,688.66x = 43,015.38 × 9,960.65
  4. Step 4: Simplify right side
    28,688.66x = 428,461,202.53
  5. Step 5: Solve for x
    x = 428,461,202.53/28,688.66
  6. Step 6: Final answer
    x = 14,934.86

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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.