Home / 10,956.70-16,435.05-9,109.90

Finding the Fourth Proportional to 10,956.70, 16,435.05 and 9,109.90

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Solution

The fourth proportional to 10,956.70, 16,435.05 and 9,109.90 is: 13,664.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,956.70 : 16,435.05 = 9,109.90 : x
  2. Step 2: Convert to fraction form
    10,956.70/16,435.05 = 9,109.90/x
  3. Step 3: Cross multiply
    10,956.70x = 16,435.05 × 9,109.90
  4. Step 4: Simplify right side
    10,956.70x = 149,721,662.00
  5. Step 5: Solve for x
    x = 149,721,662.00/10,956.70
  6. Step 6: Final answer
    x = 13,664.85

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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.