Home / 28,938-43,406.90-9,218.15

Finding the Fourth Proportional to 28,938, 43,406.90 and 9,218.15

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Solution

The fourth proportional to 28,938, 43,406.90 and 9,218.15 is: 13,827.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,938 : 43,406.90 = 9,218.15 : x
  2. Step 2: Convert to fraction form
    28,938/43,406.90 = 9,218.15/x
  3. Step 3: Cross multiply
    28,938x = 43,406.90 × 9,218.15
  4. Step 4: Simplify right side
    28,938x = 400,131,052.11
  5. Step 5: Solve for x
    x = 400,131,052.11/28,938
  6. Step 6: Final answer
    x = 13,827.18

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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.