Home / 28,372.16-42,584.16-21,776.96

Finding the Fourth Proportional to 28,372.16, 42,584.16 and 21,776.96

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Solution

The fourth proportional to 28,372.16, 42,584.16 and 21,776.96 is: 32,685.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,372.16 : 42,584.16 = 21,776.96 : x
  2. Step 2: Convert to fraction form
    28,372.16/42,584.16 = 21,776.96/x
  3. Step 3: Cross multiply
    28,372.16x = 42,584.16 × 21,776.96
  4. Step 4: Simplify right side
    28,372.16x = 927,353,548.95
  5. Step 5: Solve for x
    x = 927,353,548.95/28,372.16
  6. Step 6: Final answer
    x = 32,685.33

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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.