Home / 28,389.30-42,589.89-9,667.86

Finding the Fourth Proportional to 28,389.30, 42,589.89 and 9,667.86

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Solution

The fourth proportional to 28,389.30, 42,589.89 and 9,667.86 is: 14,503.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,389.30 : 42,589.89 = 9,667.86 : x
  2. Step 2: Convert to fraction form
    28,389.30/42,589.89 = 9,667.86/x
  3. Step 3: Cross multiply
    28,389.30x = 42,589.89 × 9,667.86
  4. Step 4: Simplify right side
    28,389.30x = 411,753,093.94
  5. Step 5: Solve for x
    x = 411,753,093.94/28,389.30
  6. Step 6: Final answer
    x = 14,503.81

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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.