Home / 28,688.60-43,039.81-9,965.91

Finding the Fourth Proportional to 28,688.60, 43,039.81 and 9,965.91

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Solution

The fourth proportional to 28,688.60, 43,039.81 and 9,965.91 is: 14,951.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688.60 : 43,039.81 = 9,965.91 : x
  2. Step 2: Convert to fraction form
    28,688.60/43,039.81 = 9,965.91/x
  3. Step 3: Cross multiply
    28,688.60x = 43,039.81 × 9,965.91
  4. Step 4: Simplify right side
    28,688.60x = 428,930,885.33
  5. Step 5: Solve for x
    x = 428,930,885.33/28,688.60
  6. Step 6: Final answer
    x = 14,951.27

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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.