Home / 28,861.43-43,291.67-9,139.95

Finding the Fourth Proportional to 28,861.43, 43,291.67 and 9,139.95

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Solution

The fourth proportional to 28,861.43, 43,291.67 and 9,139.95 is: 13,709.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.43 : 43,291.67 = 9,139.95 : x
  2. Step 2: Convert to fraction form
    28,861.43/43,291.67 = 9,139.95/x
  3. Step 3: Cross multiply
    28,861.43x = 43,291.67 × 9,139.95
  4. Step 4: Simplify right side
    28,861.43x = 395,683,653.52
  5. Step 5: Solve for x
    x = 395,683,653.52/28,861.43
  6. Step 6: Final answer
    x = 13,709.78

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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.