Home / 28,861.30-43,293.30-9,141.40

Finding the Fourth Proportional to 28,861.30, 43,293.30 and 9,141.40

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Solution

The fourth proportional to 28,861.30, 43,293.30 and 9,141.40 is: 13,712.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.30 : 43,293.30 = 9,141.40 : x
  2. Step 2: Convert to fraction form
    28,861.30/43,293.30 = 9,141.40/x
  3. Step 3: Cross multiply
    28,861.30x = 43,293.30 × 9,141.40
  4. Step 4: Simplify right side
    28,861.30x = 395,761,372.62
  5. Step 5: Solve for x
    x = 395,761,372.62/28,861.30
  6. Step 6: Final answer
    x = 13,712.53

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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.