Home / 26,457.20-39,660.50-9,812.78

Finding the Fourth Proportional to 26,457.20, 39,660.50 and 9,812.78

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Solution

The fourth proportional to 26,457.20, 39,660.50 and 9,812.78 is: 14,709.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,457.20 : 39,660.50 = 9,812.78 : x
  2. Step 2: Convert to fraction form
    26,457.20/39,660.50 = 9,812.78/x
  3. Step 3: Cross multiply
    26,457.20x = 39,660.50 × 9,812.78
  4. Step 4: Simplify right side
    26,457.20x = 389,179,761.19
  5. Step 5: Solve for x
    x = 389,179,761.19/26,457.20
  6. Step 6: Final answer
    x = 14,709.79

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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.